If we're criticizing feminism now, my main problem - and it's not simply a strawman (-woman?) but effectively the mainstream - is that feminists constantly say "Sexism affects men, too! Men have tons of totally problems stemming from unfair cultural gender roles! But we're not going to address any of them because women have slightly more! And if you try to, you're an evil em-ar-ay!"
My experience is that generally the opposite happens (granted I don't browse many forums except this one), people will bring up men's issues as a "hey look both genders suffer equally" thing. But yeah, I'm sure it goes both ways, lots of obnoxious people on the internet.
MRAs tend to be terrible. Most are thinly veiled anti-feminist movements rather than the legitimate genderflipped equivalent they claim to be.
The basic problem is that, if you go and look at their websites and the subreddit and everything, a lot of it has that conspiracy theory-esque quality where all problems can be traced back to women or feminism. This is the OPPOSITE of what men face nowadays; as a whole, most of the oppressive stereotypes towards men are enforced by men. I mean that on a very literal level; a guy who acts "feminine", "weak", or god help him, is actually gay, is probably going to get the most shit from other men rather than women.
All of which varies wildly based on where you live and who you know personally. Also whether you're in school or not, high schoolers and middle schoolers seem to be some of the worst people in regards to masculine shaming, probably why there are all the suicides.