"es there is some man/mil/etc bashing on here but at least it gives people the chance to talk anonymously."
As with many websites, it is often the case that people with something to "get off their chest" are more likely to post than those who have a contented life (as per Tee2072's " we don't usually come here to post 'Oh my DH is sooo wonderful' " comment).
However, far from there being a lot of man haters, the vast majority of the time, posts I see are of the "yes, he's being a bloody " (other words might be used!!) and as a man, in pretty much every case I can see why that's the judgement.
Men are often selfish, myopic, unthinking, idiots, who simply don't pull their weight, and when you hear of some bloke who was invited to a party on Saturday night but went off on the Friday and has phoned to say he will be back home around tea-time on Sunday, can you wonder that feelings run pretty high!
Coming onto AIBU with such a loaded question is asking for it, mate.
Yes, there may perhaps be some advantage in a few more men participating, and it may lead to some better understanding, but there will undoubtedly be some vociferous posters (both male and female) who appear to have a "stuck needle" and will be ignored as others see the same arguments trotted out again and again.
Most men (who might churn out the same outdated arguments) would be advised to do a lot of lurking [reading before posting] simply to learn the lie of the land and not be branded a fool.
Not sure whether someone was branding me the other day, as the post straight after mine said something like "He's a knob" (I just assumed it was concerning the politician / actor / musician under discussion and let it be without query).