What I like about your point of view is that it’s heterodox and contrary to the mainstream - and therefore useful to air and consider.

I also agree the blank slate is not true, nature is huge (although nurture is also obviously important - otherwise it wouldn’t matter what parents you have).

I can only speak to my experience, which is that culture and renaissance/reformation thinking is more important than race as a characteristic. When I’ve worked with people fresh off the boat I’ve found I often didn’t enjoy the experience, but racially diverse people brought up in my culture are generally pretty awesome.

I would be more convinced by your point of view if I could find evidence that:

1. Genetic diversity within racial groups isn’t bigger than genetic differences across groups.

2. Racial differences persist after a couple of generations

The last time I did a deep dive on race science I was very underwhelmed by the poor quality of the studies.

I’ve just found it better to treat people as individuals, to not assume any characteristics about them based on physical cues, and that seems to work out pretty well for me. Your mileage may vary. Happy for you to share any high quality evidence you think supports your views.