On Yahtzee's Let's Drown Out
series (him from Zero Punctuation, he does a weekly Let's Play / Podcast hybrid) there's a guy called Gabe who refers to the "someone covered in shit" principle. This is where somebody is making an excellent case for something with a compelling argument really getting people thinking - only for someone covered in shit to stand up beside them and shout "I agree!", derailing the conversation and rendering the argument ineffectual.
That's what these MRA pricks and their ilk are, people covered in shit. Hiding your sexism behind feminism? You're a person covered in shit.
I must have missed that thread, Beamer, although I doubt I'm any worse off for having done so. Blocking someone because you disagree with them is weak but blocking them for how they said it is more understandable, which I think is what you're implying.