The context to this is saying about how they're not a fan of the subreddit LeftWingMaleAdvocates, which is a bad subreddit, it's mostly just anti-feminist and basically just MRA, but they just call themselves left-wing. Most of their "left-wing" stuff is actually just "classical liberal" talking points, so they are bad, but calling them tankie is ridiculous.
MensLib is a pretty good sub, although it's full of shitlibs.
Yeah, I mostly just go there for the mental health and free talk threads, because it's basically the only subreddit in which I can talk about my mental problems (which, if I'm going to be honest, heavily involve dating) without either:
A) Being attempted to be indoctrinated into some red or black pill shit, or given a bunch of weird evolutionary psychology/Jordan Peterson shit about "the way women are".
Or B) Have a whole lot of things be projected onto me, being told that I'm basically an incel, or that I'm sad about this because I don't see women as people, etc.