Oh for Christ's sake, don't start that shit.
He doesn't like Ruby, and that's perfectly fine. He just decided to express that distaste in a very spiteful way.
Don't pull this LOLOL HE HAS PSYCHOLOGICAL PROBLEMS bullshit. Don't circlejerk, don't go "Oh, but we're so above these TROLLS", don't pull any of that other crap. That's not helping anyone.
If you have issue with it, take it up with him, but avoid this goddamn ad hominem.
Nothing is gained by you acting like assholes, no matter how much you feel the other people already are.