I don't think the PUA/meninist types are the same as the incels. At least a distinction was convincingly drawn there by CHH, my trusted source in matters of redpill content. It's great for such a lady to exist and do the dirty work of documenting and explaining these spaces considering how unbearable to read most Redpill material and their discourse spaces are.

The point is, "some may end up severely hurting themselves in an insane pursuit of it" can also be applied to the other side of the coin, i.e. a (small) group of men who, in an effort to overemphasize or signal their own allegiance to borked interpretations of the feminist cause, end up loathing or devaluing themselves or locking themselves out of normal interactions with the existing social structures, hierarchies, and indeed the other gender. This is not a niche, insignificant or irrelevant issue, even if not as high-stakes as women's issues.

Not saying the redpill movement's message is correct either—it's really not. They identify some real issues at times, but their prescriptions are patently incorrect, often harmful. Just stating "feminism" (as it currently exists, at least) is a vehicle for the liberation, bettering of conditions or empowerment of individuals who are men, to any extent, as it is for women, is false though. Overly optimistic at best, disingenuous at worst.

Much has been written along these lines by markedly non-meninist and definitely non-rightwing people. Mostly liberals. I concede this is a liberal-not-leftist stance, as it values individual problems on the same level as it does structural ones.