"They are taking an almost Marxist categorization of oppressor and oppressed along the axis of gender and sexuality, which must be inverted in order to achieve liberation. "

According to James Lindsay, who has dedicated his life for the past several years to, as he puts it, "reading the left's literature and taking them seriously," Queer Theory absolutely is a completely Marxist-based theory/worldview. In some ways, I think of it as today's all-encompassing version of a pure Marxist/Hegelian/dialectic approach to society and reality. It can be summed up as dedication to the belief that "All that exists deserves to perish."

Yes, they do want to completely deconstruct and destroy absolutely everything, because only in doing so can humankind be truly "free." It is this impulse which ultimately drives radical Leftism, and why it Just. Won't. Die. Whatever there is---whatever exists---is wrong. They know it's "wrong" because we haven't reached Utopia yet.

Queer Theory doesn't just want to expand categories relating to sexual behavior and gender identity; it explicitly wants to eliminate all norms and distinctions in everything you can imagine. This, I think, can be seen as encapsulating Marxist/Radical Leftist thought and identifying the ultimate goal of its continual (often disguised) iterations. Queer Theory is the Universal Solvent the Left is currently using to dissolve, disrupt, dismantle so as to allow the emergence of a Utopia unfettered by not just society, but by Reality itself. THAT's why they are so insistent that they can make biological facts conform to their politics---at its heart it's a religious belief that they truly can bend reality to their will.