Also, non white immigrants face discrimination.

People facing racial discrimination can and have overcome it, throughout our history.

People hold out willing non-white immigrants succeeding as proof there is no significant racial discrimination. But this ignores a large selection bias. People who voluntarily immigrate almost always have a great deal of drive and often some resources. Most of them would have been more successful then average if they had stayed in their home country.

I definitely wouldn't say my lineage had any call in "immigrating" into the US.

And yes, don't underestimate how such maneuvers are very indirect means of white flight. African Americans could only (legally) own a home in much of the US for 50 years. At the very best, that is 2 generations of wealth to accrue, which puts that demographic a good century behind what potentially could have been economically.