I wonder about the consolidation.
I sometimes think that a lot of postmodernism was developed explicitly to function as a critique of the mainstream - an avant-grade/elitist project, perhaps.
What happens when it becomes the mainstream?
I suspect many of those who developed the thinking never really envisioned a point where it would be the mainstream.
And is it part of a (Whiggist) historical movement of progress - things getting better and better, us all moving forwards to ever greater equality - or is it a paradigm shift? A fundamental rupture with the Enlightenment project? (A rupture which Foucault and others saw themselves as engaged in?)
Anyway, as for Foucault - his thinking is so interesting - if only because he played with the idea of what a 'body of thought' and what 'the thought that can be tied to a name such as Foucault' might be.
I think he deliberately played with the extent to which his work might be tied to his life/judged by his life.
It's come up before: at least one biographer has looked at his decision to have anonymous unprotected sex whilst he knew he was HIV+ through the lens of his work: both how his thinking might have informed that decision and vice versa.
Given he was a sophisticated thinker, who played with the philosophical tradition of both refusing the materiality of the author in the work (the philosophers body/life within the work/being used to judge the work) and the desire to do just that (reading a philosophy through the life of the author), I think it is acceptable to look at Foucault's work through the lens of his choices.
And I'm not sure it is just one or two transgressive individuals.
There is something so odd about how an essentially transgressive and quite niche area of philosophical thinking became so very popular.
I think there's a really interesting materialist history to be written there.