Chess.com has no problem allowing Niemann to participate in tournaments after they allegedly 'caught' him, and they only became very principled after their business partner Carlsen had lost to Niemann and instigated the conflict in a very disingenuous way. In any court their testimony would be thrown out.
Also, he allegedly cheated for money at 12yo. Yeah, right, that's definitely a grave unforgivable sin that should ruin his whole career. /s