Yes, a lot of progress has been made in regards to cultural integration in the US, but that progress has been due to attempts to "regulate" cultural blending, rather than in spite of it. The US has had to be forced time and again - often with persistent struggle and at times violence - to live up to its stated ideals.
If you believe the anglo-saxon majority no longer holds the majority of the political power in the US, ouf.
This is simply not true. The natives embraced a lot of aspects of European culture. Nearly all developed métis cultures and deep commercial trade. Most of the initial treaties were ones of friendship and alliances.
Go visit a native museum, they want to preserve their culture, not expunge it from European influence. They hate wokeness and mass immigration too, by the way.
If mathematics and the recognition of cause-and-effect are white supremacy, then maybe they're right. /s
Seriously, this new "dei" or "crt" rhetoric needs to get shut down hard or it will undo all the progress that has been achieved.
Therefore the idea of the existence of objective truth (2+2=4) must destroyed and subverted in order for the "goodfact" to be swallowed.
I just finished The Road to Serfdom by F. A. Hayek, and he lays this out fairly well as a strategy of totalitarian regimes, or groups with totalitarian impulses. (Chapter 11, I believe)
Even beyond the natural sciences, this seems to have been somewhat the case. I remember my uncle, who is as unabashedly anti-communist as it gets, once showing me a grammar of some minority language written in the GDR and commenting, almost with admiration, that "back then, they invested a lot of resources on things like that".
Which makes it all the more incredible, that the "host" operating system culture of the melting pot is attacked and a attempt is made to "regulate" cultural blending. Its a majority vote system, without a need for regulation. The good thing goes in ("Yoga" as a sport, meditation system), the bad stays out (insane cults, backwards religous practices that are abanduned in all religions). Nobody needed to facilitate or control that, but a sparse, neutral stove and a pot.
The people vote, with there feet, there wallets and there actions. Unemployed commisars, race-warriors and revolutionarys are free to form a line for unemployment checks.