Hard disagree. That comment isn't contributing to dialog, even of the heated variety. It's hatred for the sake of hatred, and I don't think there's a place for it.
I'm happy to debate with earnest people I disagree with. That's interesting, and done well, we can both learn from it. There's no value in repulsiveness for the sake of repulsiveness. I don't expect a forum mod to be on top of every single comment ever made, but when things like what I linked are reported but stay up, the moderators are saying, yeah, we're fine with spending server resources to host that.
