Not to start any drama here, and I know this is generalizing, but when UA/Adidas sponsored players get injured, "it's the shoes" yet when KD and Kobe get hurt, it's just a freak accident that could have happened to anyone. Personally, I think it was the KD6 that really started to bother Durant. I disliked those shoes a lot and at my gym, no one who played in them said they loved them and most said they were terrible to mediocre. Can't imagine how a pro who has to wear them every day would feel about them.
Again, I know that's a gross oversimplification and I'm not a Nike/Jordan hater, although they do things that bother the hell out of me sometimes (and so do UA and Adidas). I don't think anyone blamed the Nikes Brandon Roy wore throughout his career when he started dealing with injuries. I think it was Jason Petrie who talked crap about Adidas when Rose first got hurt.
It's a bunch of BS.
Fortunately, we are going through a pretty good era of performance shoes at the moment, and I'm becoming more and more convinced it might be the best period ever. The Curry 1, CF Drive, XX9 and JC2 are essentially flawless and I can't point to anything really "wrong" with them. I can't remember a time when there were this many shoes that were so good and readily available.