I think most of the threads here are the opposite. Upon first release there was negativity, but people have accustomed to it. I dont like the look because its just not my style, but it wont keep me from upgrading it though. Ill just be a displeased with the look, but the function is great.
I think apple made a mistake doing a drastic change in a short amount of time, redesigning from the ground up in less than a year is a feat, but one that didnt need to be done. Apple is known for releasing features late, but when they do its the most stable form on the market (with the exception of maps). And I feel like with the whole redesign in less than a year, they may be missing or overlooking some things. I just hope they dont rush the final release to just please the masses.
Certain things people do complain about, but with good reason. Such as the amount of white straining on the eyes and such, but I dont think thats just "negativity" I think its legitimate criticism in which the OS needs improving. Whether or not members are presenting it as legitimate criticism or blind complaint depends on their tone and presentation. But it is a beta, a lot of people have access to it and it seems like the consensus is positive.
I dont think there are samsungers trolling, there are some obvious android fans who do it, but I believe a lot of the negativity is from iOS6 user who are displeased with iOS7 for whatever reason. Its just the intensity in which they present it that just may seem troll-like. But like I said earlier, Im a huge fan of gloss, embossment, and contrast and the appearance of iOS7 is devastating to me, and I may give negative criticism about it because it not my style, but that doesnt mean its all negative feedback.
No matter what Apple does, they will always face negative feedback whether its from the competition or its own users. Because their idea is one walled garden, you can either get accustomed to the new plants, hang out in the old garden that isnt being watered anymore, or move to another garden with less favorable fruit but a greater diversity. Essentially what Im saying is that because there is no option at all for visual customization, the UI they choose will more than likely not fit in to 100% of iOS users tastes, and therefore will receive some kind of negative feedback because of it. There is no way to completely please everyone without allowing the users alternative options within the OS, which Apple is against doing. Its the same thing with politics. Despite a politician winning 51% to 49%, that one politician will rule over the entire population. A resident can either move away or accept it, and just because they choose not to move away it doesnt mean they are happy about it.