He's averaging 7.3 this season, 7.5 for his career. He's not great at it but his numbers take a hit from playing with Humphries and Reggie Evans who are out there to rebound the ball. Reggie fights his own teammates for rebounds.
He has looked much better this season getting tough rebounds. He has his moments where he gets out-muscled by smaller guys but its happening less than previous seasons.
Brook has always been a subpar rebounder bruh. Two seasons ago he averaged 6 boards a game and Evans wasn't there. If he can even get back to his first and second year rebounding averages he'd be ok.
also brook rarely plays 35-40 minutes