I could see Trump taking this attitude until he meets his very first encounter with the actual degree of stress he'd have to suffer to execute it.
He would then immediately give up and blame, I don't know, Egypt or something.
Trump has no willpower or self-regulation skills at all. He is not a planner, a leader, or a strategist. He's not willing to work, ever, for any reason. A war is beyond his capacity.
And nobody willing to align with him is competent.
I see your point, but it's all talk right now. There's still US military everywhere, the dollar is still strong, McDonald's is still selling hamburgers, people are still watching Hollywood movies and TV shows and still subscribing to Netflix.
I'm not saying actual shunning and sanctioning of America can't happen, but we're absolutely nowhere near it right now. People are just yelling, and mostly on the internet.
Tesla is getting hit, but they're only one company.
An actual boycott of America as a whole would be a massive lifestyle change for huge portions of the world and that kind of scale is not where we are at this moment. We're all just bloviating.
PC component makers used to. They found it hard to swindle people into buying what was most profitable over what was best performing, so they deliberately made their naming schemes incomprehensible.
This practice exists, but is in violation of guaranteed constitutional rights. The rights still exist and must be respected. The United States' failure to do so does not absolve the responsibility, nor does it negate the reality of the rights in question. The laws and practices enabling this situation are unconstitutional and thus illegitimate.
As for what can be done about it, the responsibility of the average person is to be LOUD about it. Make them pay attention and do not shut up until they do.
Because they don't want to.
Full stop.