They shouldn't, and it's unfortunate that they do. But when so many of the people talking about male abuse victims are people like Narz, who have no actual interest in the well-being male abuse victims but merely wish to use the issue as an anti-feminist cudgel, it's easy to see how they become numb to it.
We don't, as a society, have the conceptual tool-kit to deal with male victims of abuse. This is tragic, and it needs to change. But embittered retrogrades are only making things worse, and there's no reason to pretend otherwise.
I never got that feeling about Narz but maybe I don't post here often enough to notice it. I've never been part of the board enough to really get to know a lot about people here.
I do think the MRA movement has done a lot to hurt legitimate men's issues by attacking feminism and just putting people on the defensive so I do agree about that.