https://official.nba.com/l2m/L2MReport.html?gameId=0022300523 Vucevic (CHI) initiates contact with Green's (HOU) left arm prior to the release of his driving shot attempt, which is subsequently affected. Green really gets dicked by the refs on his drives.
One isolated incident. Jalen is not one of the worst layup makers in the league because of the refs. He's one of the worst layup makers in the league because he can't (or prefers not to) change his speed and direction, he often avoids body contact, and he's bad at identifying defensive coverages.