I think anyone who reacts to criticism by getting angry is being really stupid, and, yes, part of the problem.
Not just the trolls who make threats to do really stupid, illegal, violent things that would ruin lives including their own, but the whole community that makes raging the normal response to any criticism.
Criticism, when taken in good spirit, is how people learn to make better games. Criticism, when seen only as a trigger to rage, produces a community in which those trolls and haters, as you call them, find refuge.
So yes, a community of angry nerds is a breeding ground for all sorts of hate, and if that's a problem, maybe we should stop forming communities with angry nerds, or tell them to grow the hell up and get over their anger.