It will help would-be immigrants understand that the US does not want them and that it would be a mistake to invest time and energy trying to build a future in a country that hates them and can nuke their lives at the drop of a hat. It will help other countries that are not the US retain their talent and build up their own industries. A greater diversity in distribution of talent and industry across the world is a more resilient system.

It’s not a more resilient system. It creates geographic isolation and friction. It dilutes the talent pool instead of concentrating it which limits cross pollination. It also reduces specialization that drives efficiency and lets each country focus on what it does best and then trade with others.

I think that’s a bit dramatic saying the US hates them, but yes to your other point. The US is taking the position that it has more to gain from having strong and prosperous trading partners than it does from exploiting those nations and draining them of talent.