I was going to post this. Not sure it was last year, might have been 2019. I didn't even think he was going for the ball, I think he was using that as an excuse to punch Josh.
There's also this from 2019, where he punched Sam Darnold right in the nuts
IMHO they should flag him for it, he's not just going for the ball, he has a pattern of punching the players.
Punching the ball out is legit, and if you're really trying for the ball and miss OK, but Watt has been punching the players, not the ball. His first hit was right into the chest.