I see, are there really "political genderqueers"?

I imagine that there were at the time in the same way there were political lesbians. Their existence would connect back with subversivism and the desire to 'break the gender binary'.

Is... the entire book steeped in ridiculous crusty terminology like this?

Unfortunately it's definitely spread throughout the book, but Serano does well to front-load the definitions. She goes into it a bit in the 2nd editions preface.

While the major themes that I forward in Whipping Girl remain just as vital and relevant today as they were when I was first writing the book, some of the specific descriptions and details will surely seem increasingly dated as time marches on. So in this preface to the second edition, I want to place the book in historical context, as it most certainly was a reaction to what was happening in society, and within activist and academic circles, during the early-to-mid aughts (or “the zeros,” as I prefer to call the first decade of this millennium). While a decade is not a huge amount of time in the grand scheme of things, it certainly feels like a lifetime ago when it comes to public understandings and discussions about transgender people.

http://juliaserano.blogspot.com/2016/04/excerpt-from-whipping-girl-second.html