Again, I pre-empted these types of debates by saying we can split hairs on why this is.

I am not denying this is the case for some, but also it's not the entire picture. I know plenty non-H1Bs that fit this bill, and there have been plenty of articles written on the rise of the Indian-American worker, especially in the tech sector https://www.southasiamonitor.org/spotlight/unprecedented-ris..., use your favorite search engine for a plethora of other recent articles on the subject.