... what kind of an idiot thinks that's a good way to get laid?
That said, everything about this is sad.
Assuming Mooney's apology is sincere and the messages are of the type shown here (meaning, mostly harmless, but clearly suggestive), he basically gets labeled as a sexual harasser when a better label would probably be "lonely and does not understand internet".
It's also a shame that women get harassed so much that such an ultimately harmless (seeming) guy manages to cross a line with them.
But since you can't ask women to put up with more, really the only thing to do is punish the socially awkward guy in this case.
That said, that kind of makes me question did anybody do anything more constructive before this, like dropping Mooney a private message and explaining to him that his behavior is inappropriate and telling him to please stop?
Of course it's not anybody's responsibility to teach others how to not be creeps. But I think it'd save the world a lot of grief if people took more time to explain things to socially inept people.
(Of course for all I know maybe he was given a chance. I don't know.)
As I said, sad all around.