Fine, I don't disagree with anything you point out. However where we differ is that I believe identity politics is the trigger factor here, all the other changes you mention (loss of balance of power etc) are downstream of this.
These two sentences, taken together, lead me to exactly the opposite conclusion—exploitation of identity politics allows one to gain power to enact corruption. You play into what people want by being the savior they think they need and then once in power do whatever the hell you wanted in the first place.
This includes ‘women’. A group that probably has a small majority.
But in the US, “minority” means “less poticial power”. By any reasonable measure straight white “Christian” men should be about 20% of the population, yet somehow they have 80% of political power.
And to reply to the comment above yours, there are material factors upstream of idpol. It's not a coincidence that sort of thing is in renaissance across the world.