My understanding is that Tony Parker was the only one questioning his recovery from injury. A lot of that was because he went off on his own to rehab it during the summer and came back still fucked. The Spurs were shocked he was still fucked because they had no idea. You can chalk that up to Kawhi being Kawhi, but come on. They are paying you millions of dollars - you should be able to at least get someone in your camp to give the Spurs a call and let them know.
Also, he seems to also have a low tolerance for pain. I don't think he had one injury this season. 60 games. He missed 22 games. Totally healthy. And he keeps tweaking something in these playoffs; he's lost some lift. I think it is possible that he has just worked himself into a 32 year old body at 27.
If it was almost any other organization, you could craft a pretty easy narrative that either mgmt fucked it up or the coach-player relationship deteriorated. In this case, it seems like neither of those things happened. It is more just simply that Kawhi is an island. He has a few people. Lots of people aren't thrilled with those people - not because they are bad, but simply aren't part of the team so why do they want on the plane/bus, etc.... I suppose everyone now understands what having Kawhi on the team means both the good and the weird. Everybody can essentially prepare and learn from the Spurs mistakes, but at the time, it is a weird thing to try and figure out a player playing primadonna games who is essentially the polar opposite of a primadonna.