Actually, I would describe the "negative" the other way. This is a public forum made up of Apple enthusiasts. That makes this a biased group favoring Apple; else, why are we here? There's 3 key segments of people:
- a segment that seems to subscribe to "Apple is always right" no matter what they do or launch,
- a segment that seems to subscribe to "Apple is always wrong" no matter what they do or launch, and
- a segment that I consider the fairly objective crowd somewhere in-between those two.
Almost all of those people are
consumers, more alike than not except in their view of Apple as God, Devil or neither.
Apple rolls out any product and group #1 will praise it to no end, group #2 will fault it to no end and group #3 will write what THEY actually think- good or bad. If good, they win the hearts of the "Apple is God" crowd. If bad, they win the hearts of the "Apple is the Devil" crowd. But no matter what, there will be multitudes that will find fault with their stance because they are obviously not at the extremes too. And they'll be sure to pound them hard to try to make others see that "think different" doesn't actually apply to those who do it unless, in doing it, it's pretty much all "rah, rah" or all "pooh, pooh" depending on which extremists decide to respond.
The most passionate of either group will inject spin like crazy to support their stances... even making up or implying something as truth so that others might be fooled into supporting the extreme pro or extreme con stance. For what? I don't know. I doubt many of these closet Apple marketers are on Apple's payroll and I doubt many in the other extreme are on competitor payrolls. Sometimes it appears that the core players of group #1 still see Apple as a fledgling company at risk of going under and needing every possible sale it can get no matter what choices they make in rolling out this or that. So they will argue on behalf of Apple no matter what. The same is mirrored by the other extremists in group #2.
In this particular case, consumers are buying 4K TVs. They have them in their homes. What do they want to do with that new TV? Show some 4K on it. They buy Apple's new iPhone and shoot their own 4K. They use Apple new iMovie or FCPX to edit that 4K into final form. They render their movie out to a 4K Quicktime file. That file will go right into iTunes just like any other movie file. Then what? How do they get it from there to their new 4K TV? This was an opportunity for Apple to completely own that chain. Instead, they need to use a competitors product, jump through some less than "just works" hoops, or settle for downscaling to 1080p and having their TV upscale back to 4K (which is FAR from the same as native 4K).
If this was another time and I was one of the first buyers of televisions, I'd desire television shows to watch on it. 5000 arguments against television (too expensive, almost every program is
radio, hardly anyone has a television, etc) doesn't change that
consumer desire.
At another point, if I bought a new color TV, I'd covet
color television programming. 5000 arguments against color programming (too expensive, almost every television show ever shot is B&W, hardly anyone has a color television, etc) doesn't change the
consumer desire.
At another point in time, consumers bought new "HD" televisions. What did they want to show on them? HD programming. 5000 arguments about how there was hardly any HD programming, almost everything is SD, hardly anyone has a HDTV, etc) doesn't change that
consumer desire.
And now, if anyone is buying a new TV in 2015, a 4K set is viable, not overpriced and accessible for the masses. Go to a Best Buy and look around. Increasingly it seems there are more 4K sets than HD sets. And they look spectacular. Sit down and watch for a while. Note boxes moving toward the exit door with new TV buyers. What's going out those doors: 4K or HD? Those who have already purchased a 4K TV desire 4K sources immediately. 5000 arguments against it (too expensive, almost nothing is available in 4K, hardly anyone has a 4K TV, etc) doesn't change that
consumer desire.
Is there much 4K available to feed those sets right now? No. But there wasn't much HD when HD was new, nor color TV shows when color was new, nor television shows when radio still mostly ruled. Sometimes things just need to move forward to bring on television over radio, or color over B&W or HD over SD. Us Apple enthusiasts see Apple embracing 4K in just about every other Apple product and some of us wish they had in this one too. Putting millions of new app-store and 4K-capable

TVs in homes would certainly create motivation for content owners to make more content available... much like color televisions motivated B&W shows to switch to color, or HD hardware motivated SD shows to go HD. Someone has to take the lead. Why not our favorite company?
In a public forum made up of consumers- not corporations- consumers should be able to post their wishes and not be judged wrong because they don't tow the company line... or wrong because they are otherwise liking a new product except they wish it also had this one thing. But that's how it is here. Rah Rah Apple no matter what Apple has chosen to roll out or the ADF will pound you. Pooh Pooh Apple or the other extreme will pound you. Can there not be room for those who write what THEY actually think... those more objective people in the middle who are doing nothing more than just "thinking different"? Wishing that a new product had some feature- fringe or not- doesn't affect the God or Devil at all. It just is fellow consumers expressing how they wish that this new product had this new feature too.
Relative to this particular device, it's basically the lone product in the core Apple lines that is NOT embracing 4K yet. I wouldn't call 4K "fringe" when the rest of the lineup is touting 4K, shooting it, editing it, displaying it, etc. Apple is marketing 4K to sell 5K iMacs and new iPhones and iPad Pros. I doubt that Apple sees it as "fringe". They just didn't adopt it in this ONE product. And as such, the ADF needs to rationalize Apple's choice to delay the one remaining link in the chain from
iPhone->iMovie->Quicktime->iTunes->AppleTV->4K TV. Why? I don't know. Apparently the supreme rule is to never want what Apple is not selling right now. But these same passionate posters won't be calling Apple stupid when they roll out the "5" "now with 4K". How do I know that?..
This is simply 1080p again, where all of the same arguments were used against those who wished for a 1080p

TV before the "3". All that passionate anti-1080p sentiment appeared to just evaporate immediately upon Apple rolling out the "3" "now with 1080p". If we genuinely feel as we do against 4K, we should still feel that way when Apple adopts it... and should deem Apple ridiculous for endorsing it as it is for consumers to wish Apple would have endorsed it in this "4". But we don't. If we can only roll with whatever Apple decides as best for all, then we're really not thinking for ourselves but simply towing the company line. For what? I don't know. Apparently we want to market for Apple so bad, we'll do it for free... to no real end and for no tangible gain.