I fully agree. The US has always been fairly socially and even in some ways technologically isolated, but now it will be economically isolating itself as other countries blow the US off in disgust and establish trading relationships elsewhere.
Unfortunately, I am 61 years old - actually one of the younger commenters here. Unless things get so bad that another country accepts me for asylum or as a refugee, I’m stuck here. I was at least hoping to sell my house and retire in a low-cost-of-living part of Canada like Nova Scotia, but even that is impossible. Residency is not given to someone of my age and especially not retired persons, and the limit for visitors is 180 days in, 180 days out. Even if I flaunt that rule, I run into tax issues, and problems with covered medical care being hours-away.