You make a really nice argument here. I would just like to clarify why I don't consider misogynist movements subcultures: it is, essentially, for the same reason I wouldn't consider pop music or the Java community as "subcultures".

If, using the article's terms, the sociopaths have already exploited its potential for financial benefit to its maximum extent, and if this expression of culture is the dominant, normative expression of culture for its cultural domain, then it is not a subculture, even when you put a new, fancy name on top.