I don't mind a vigorous exchange of views in my journal. I do, however, mind someone coming in to just fling crap - which is what he's doing, by his own admission.
Yes, freedom of speech is a bitch. You can use it to mock, troll, belittle, and abuse others to satisfy whatever feelings drive you to be a raving asshole. I can also call you a raving asshole, because that's exactly what those who do so are, at least in their online persona.