Of course it marginalizes them!! Why does it need contextualizing when from the context itself it is pretty darn obvious to any thinking person that this is not something said by a supporter?   
I don't think anybody here has said that the "MRM is misguided and useless"- please avoid strawmen.  However, it is true that very few scholarly sources have much good to say about the men's rights approach or the men's rights movement. I've done a broad literature search, but maybe I've missed something.  Can you offer up some academic sources that speak more positively about the movement?