Teresa de Lauretis (and Judith Butler) both started to point out, as early as the 1980s, that "second-wave feminism uncritically shared the very epistemological sex-gender framework it aimed to question"
de Lauretis' "conclusion takes the form of an extremely lucid warning: feminism functions, or can function, as an instrument of normalization and political control when it reduces its subject to 'women.' Under the apparent neutrality and universality of the term woman, a host of vectors of production and subjectivity are hiding: sex, race, class, sexuality, age, ability, geopolitical or corporal difference, and so on"
"In Lauretian terms, the subject of feminism is inevitable eccentric; rather than coinciding with 'women,' it arises as a force of displacement, as a practice for the transformation of subjectivity."
see "Eccentric Subjects: Feminist Theory and Historical Consciousness" Feminist Studies 16, no. 1 (1990) 115-50.