It's hard to say about the off court stuff, but I think there are on court concerns as well. Mostly they are BBIQ related questions, for me, where he doesn't seem to have a good feel for what's going on all the time and often makes bad reads on both offense and defense. I'm guessing this is why he hasn't played for the Rockets more since his production has been great so far.
It's just a little strange to me since the dude's a bucket, it's super clear, and usually guys like that get on the court despite BBIQ questions.