The worst part about the post-truth stuff is how it's transparently just a vehicle for arriving at a desired conclusion when working backwards, then "logic" is applied forwards from there to reach a desired end state for the world.

The idiot HR lady who's pretty sure she "deserves a seat at the table" because she's just like the men working in a productive capacity then freaks out when someone attempts a grown-up conversation with her *based on the topic she brought up for her own affirmation* is really no different than the trans furry lunatic who shot Charlie Kirk who likely thinks the reason his boyfriend is not a woman, thus making him a homosexual, is because people like Kirk *refuse to accept that men are women*.

It's "I invent my reality because that's what I want to believe" then with the idea that belief is what reifies everything in the world, go and use the logical conclusion of such obvious bullshit to impose upon other people.

It applies rationality but only when the rationality results in action taken on other people. When it comes to accepting things that are clearly untrue, said rationality is completely abandoned. They would never, for example, accept "It's my truth that I didn't smack the HR lady on the ass in the break room", but will in a heartbeat accept "The HR lady isn't an astronaut and part-time rock star because of the patriarchy.

It's *always* selectively applied. Not just to other people, but also to the people pushing post-truth claims, themselves.