Are you just assuming his dad paid for his school? Do you know if he received any scholarships? Do you know the finances of his mother/mother's side of the family?
A scholarship? People from Nigeria can't even get a visa into the US.
This is absolutely bullshit.
That's not even true in September 2022[0], let alone throughout the whole immigration history from Nigeria to the US.
There are a quarter of a million immigrants from Nigeria in the US.
[0]: https://travel.state.gov/content/dam/visas/Statistics/Immigr...
Someone like him not born to such father in Nigeria, will likely be an high school teacher getting paid $100 every 4 months.