PrivateF, I got this from your link"-
“It’s deeply disappointing when someone we’ve honored, and who regularly speaks to the world representing humanists everywhere, fails to meet our expectations. When a prominent humanist’s commitment to reason, compassion, and egalitarianism appears to be fundamentally compromised by his or her behavior, we must act on our disappointment to ensure that the world understands humanists at large don’t condone such misconduct,”
However if you're trying to compare this case to cases where religious people have committed sexual misdemeanours, there's a vast difference.
A religious person may well use religiosity as a cover for acts of abuse, almost a protection, which is horrendous & is how so many got away with it in the past.
An 'antitheist' as you describe him is not going to be able to hide behind his antitheism any more than an eminent geographer would be shielded by geography.