Eat Peanuts
we shouldn't totalise meaning by refusing to acknowledge difference
I can see the argument you are making. However Foucault said we shouldn't attach ourselves to any discourse, including his. So we shouldn't refuse to acknowledge difference, nor should we always acknowledge difference. We should recognise the technologies of power and play the game strategically- so I come back to Butler's strategic categorisation.
I don't think there is a specific TRA manifesto, and if there was, I don't sign up to manifestos. Think of the flaws in all three major party manifestos- it's impossible to sign up to any of them really. We end up voting for best fit. So in this case, I am trying to take a nuanced, thoughtful approach which neither disadvantages women nor disadvantages trans people.
Materialist
what exactly has postmodernism accomplished, politically speaking?
Postmodernism’s exposes the hidden values and assumptions underlying much political thought. Because of this it be used as a methodology for interrogating 'taken as read', 'status quo', 'accepted wisdom' values and assumptions. Because of this, it has value both to critical analysts and to members of disempowered social groups.
Any gain made by challenging women's 'natural' 'need' or 'desire' to stay at home popping out babies is a win underpinned by postmodernism's ability to question accepted wisdom, often couched in biology.
And can I just say I really appreciate both of your openness to discussion. We can disagree and still converse.