I think it's an inherent property of human society that disagreement is easier to write, more compelling word-for-word and idea-for-idea. War is more interesti

I think it's an inherent property of human society that disagreement is easier to write, more compelling word-for-word and idea-for-idea. War is more interesting than peace, and so on. So I do think that natural tendency will bias online discussions where social pressure against discord are lesser than in person. I'm not sure it necessarily follows to the extremes, but I do think one could find places where absurdly short disagreements are the norm. 4chan, say.