Many Asians aren’t well off. In 1989, Vietnamese, Laotians, and Cambodians had similar to higher poverty rates than African Americans, because they came here as refugees: https://www2.census.gov/library/publications/decennial/1990/.... For Cambodians it was dramatically higher. Today, Vietnamese and Laotians have lower poverty rates than the national average, and Cambodians are only modestly higher.

I’m Bangladeshi, and we are about 20 years behind in that curve. Still higher poverty rates than average (90% immigrated after 2000), but moving rapidly toward parity. Also, being upper class in “old country” doesn’t mean coming here with money. My family was upper class in Bangladesh. But a Bangladeshi college degree is worthless here. My dad came here with a job from a US company, but we were the exception. Most of my aunts and uncles work retail and service jobs.