Having had this conversation with a WigNat type before, their argument was that America was founded by White Englishmen, therefore it deserves to remain a nation of White Englishmen, in the same way that England should be English, France should be French, Germany should be German, etc.

The problem is that the United States was not founded on an ethnicity like most of Europe, it was founded on ideology. And by definition, anyone can be part of an ideology. And its why, when you present the option to most people who are even remotely Liberal (as in, they value Liberty like the nation was founded on), they will pick someone who is not the same race as them but holds the same sort of Liberty-based views (your Larry Elders, Thomas Sowells, Andy Ngos, etc) LONG before they accept Richard Spenser type WigNats, even though they are the same race.

Incidentally, I think this is why you have started seeing parents push back and dig in on the topic of CRT: even after all of the Lefts attempts to do otherwise, most people still think they should bve treated the same, and so they are looking at this ideology saying "One of you is superior and an oppressor, one of you is inferior and oppressed" and their response is "You fucking what, mate?"