Average REB for DI PF in all worlds right now is 71.14. I wouldn't consider something that's above average a weakness.
Also, you keep emphasizing his rebounding, but dismissing his 99 ATH, 94 DEF, 99 BLK, 94 LP, and competent to good ratings in everything else. You're telling me an NBA team wouldn't draft a freakish athlete who can defend, block shots and score in the post?