He’s not wrong for saying the quiet part. A country is only as advanced as the people who build it and keep it running.
Whites built the institutional America everyone is fighting to enter — courts, patents, power plants, and the middle-class order. Much of sub-Saharan Africa still struggles with corruption, coups, collapsing services, and societies that can’t keep the lights on without help from Western countries.
People should want the historic American core to stay intact — because that’s what made the country worth migrating to in the first place.