The Apple TV could do the EXACT SAME JOB that makes you happy with the "as is" even if it ALSO had the capability to play 4K too.
The iPhone having the ability to record 4K doesn't affect anyone's use of the iPhone. Those happy shooting video at <4K can. But those that might want to shoot something at 4K can do that too. It's an EXTRA benefit for those that want that extra benefit.
Otherwise, that's just another big pile of excuses. The "wait until everybody else is fully embracing it" excuse is the worst of them, but it's also the most used one (in a wide variety of forms). The "4KTVs are too expensive" one is almost as bad because it implies that a 4K

TV would require everyone to immediately buy an "expensive" 4K set; it wouldn't, that

TV would play 1080p or 720p or SD just as it does now.
As to "veiled insults", I'm not sure what you are seeing as those. I'm insulting no one. I'm simply communicating the counterpoint to towing the company line on this issue. That makes no sense to me given that it's Apple themselves that spin "think different." Can we Apple consumers think different? Or are we to only think different when "different" is aligned with what Apple has chosen to sell right now?
I've owned every Apple TV- including this new 4. They're all GREAT!!! But this "4" would have been even better if it had this extra feature, just like the iPhone has this extra feature. Whether we all would use this one extra feature doesn't matter. Those that would could get what they want too. And this is a feature that would fill the one remaining gap in the all 4K chain:
iPhone shoots 4K -> FCPX/iMovie edits 4K -> iPad Pro/iMac has the editing hardware -> Quicktime packages the 4K video file -> iTunes stores/databases the 4K file -> Apple TV -> 4K TV
You have a friend who says it's not worth it yet. I have a friend hungry for anything he can get in 4K from any source. So they cancel each other out. I desire it too and you apparently don't. So we cancel each other out. Your poll of 2 people implies nobody wants 4K yet. My poll of 2 implies that everybody wants 4K now. What did we learn?
Again, include 4K playback capabilities and those who think as you do are completely unaffected. Better hardware can play lessor software to its max. What it would do is also give those who DO want some 4K capabilities what they want too
within Apple hardware. That friend who doesn't think it's worth it yet could enjoy the value of 1080p to it's max. However, should some opportunity arise to push some 4K to his 4K telly, he could do that with Apple hardware, already capable in that very same box. Instead, it's impossible for your friend to enjoy that extra utility in this box. But, I'm sure it's better that way, even for a friend who already owns a 4K TV set.