> It's normal for countries to prioritize their own self-interest
I'm not talking about countries, I'm talking about Trump voters. An "America first" approach is totally fine, nobody outside of the US cares about.
An "America first" approach by a convicted criminal that is obviously senile, that results in arbitrary tariffs, threats of invasion of various allies, and a million other absurd consequences, is a problem for everyone. It's a problem for US partners, allies, and also the US for it's short and medium term future. Nobody will trust the US as a future trade and military partner.
In any case, as I said, I'm talking about Trump voters. The "extremely narrowly self-centred" ones are of the Andreessen types, the ones who think they can make a little bit more money if Trump is in power, even if objectively he's a terrible candidate on literally every level (criminal, rapist, pedophile, senile, can't string more than half a sentence, mocks disabled people, lies, doesn't comprehend realtively basic things, promises to deport millions of people while that being physically impossible, makes up stuff on the fly, wants to curb rights for women, LGBTQ folks, etc)