Post Modern philosophy came from France. I think French people realized their money wasn't backed by gold in 1971.

This made them question the foundation of reality itself.

If this piece of paper can be called money when it's not backed by gold, why can't I call myself healthy I'm fat? Why can't men get pregnant? What's physical reality got to do with anything since money does not equal gold?

I think the fact that France asked for their gold back and got rug-pulled is the root cause of this culture war.

Note: my personal opinion is not included in this discussion about post modern philosophy. I don't think this culture war is actually about trans-people. I believe they are being scapegoated. I don't think most Americans would give a damn if not for the industrial manufacturing consent complex.