If he hits 70+% at the rim, that's good. But I agree that he is still skittish when he thinks he might get bumped, and while the weight he has gradually put on has helped, it didn't totally fix the problem.
The complaining bothers me a lot too because a lot of times he doesn't do it when he thinks he was fouled, he does it to make an excuse for a missed shot. These are the times it bothers me. This is clearly what happened last night. There is no way he thought he was fouled.