https://www.uscis.gov/working-in-the-united-states/temporary...
Not understanding what point you are making. Is it that any displacement of US citizens' employment via immigration of foreign tech workers is somehow neutered because Linus is really good at writing code and has a US Passport? Anyway, I thought he became a US citizen somewhat recently, well after the bulk of development of Linux. Wikipedia says 2010.
Just going back in time, do you think the US would be better off if we'd excluded Irish immigrants? Italians? Germans? If blocking immigration somehow benefits native-born citizens, you'd logically have to think our population should have stayed the same as it was when we broke away from Britain. We'd be about the size of say Colombia, maybe with a bit higher GPD
Given where he ended up, probably.
Cheap rockets are nice, but speed-running a complete destruction of public trust, culture, and of any illusion that the country is one with rule of law for the benefit of a few insecure billionaire narcissists is a juice that wasn't worth the squeeze.
Well... not for everyone involved. It's definitely a "lose" for the countries they are leaving from, that educated them.