First, this is an accusation made on OnlyFans. Second, he was 13 at the time. You'd have to connect this accusation to truth, and that truth to his adult life.
So I can't fathom her accusation having anything to do with anything.
They've made it clear that the issue has something to do with statements he has made to the board that ended up not being true. The question is of what those statements may be. Not about his potential childhood errors or his onlyfans "model" sister's claims.
So homosexuality isn't relevant here. But nor is what his sister claims.
These allegations date all the way back from 2021, and the sister has made some other dubious claims like Sam hacking her wifi which erode her credibility. I highly doubt that this was the cause of his removal.