That's because much (not all) of it is.Lightknight said:Because when we get in a group and try to discuss our rights the group is rapidly demonized as some sort of bigot organization bent on oppressing women.
As several other people (including the OP) have alluded to, many supposed "MRAs" only bring up men's problems in response to women's issues, and as part of an effort to silence a discussion of them.
It doesn't help that some prominent "MRAs" have admitted that their primary purpose is criticizing and "stopping" feminists, not helping other men.
It also doesn't help that many of the "rights" men lack are rights they took from themselves (child care, etc).