Incels are just a subgroup of MRAs (men's rights activists) btw...

Eh... I wouldn't say so.

The denizens of the manosphere use a similar vocabulary and discourse, but it's erroneous to just lump they all together.

MGTOWs see MRAs and Incels as pathetic and view 'the system' (ugh, 'gynocentrism') as impossible to correct, and so they think the best course of action is to cut all ties with it ('go their own way').

MRAs pity Incels and are indifferent to MGTOWs, but unlike both, they seek to enact actual public policy change. They aren't gender separatists, like MGTOWs are or defeatists like Incels.

Incels hate both MGTOWs and MRAs and have a very deterministic view of the world, which they think is rigged against them because of their 'weak biology'. For them both 'going their own way' and trying to enact policy change is pointless, ineffective and impossible. It's literally an ideology which is founded upon extreme seething and self-pity.