Nobody actually does this outside opinion pages. Like, Argentina has defaulted on its debt nine times. It still finds lenders. Similarly, an America that has stabilised its foreign policy still represents a military superpower and consumer dynamo that would be hard for any rational leader to pass up aligning with.
I'd actually say that's a decent corollary versus counterpoint. The folks you attack will hate you. Regardless of whether you genuinely change. But we aren't directly attacking our allies right now. The folks who weren't directly war crimed by Japan, e.g. South Asia, have moved along just fine.
It's not like America was super popular before all of this, it was more tolerated then celebrated. This very large straw broke the camel's back and everyone is working on moving away and after that's done, why come back?
Not to mention the tariffs against our allies we levied. Or the fact we personally insult them from our highest office WRT things like calling their dead service members cowards.
They're not going to just forget how the US population and half it's legislative body just... Doesn't care at all. Will just let all of this happen.
We have become an apathetic, unserious people.
Unfortunately the anti-Japanese folks are the loudest in the room and loves to manipulate online opinions that that is the mainstream consensus.
They don't pause to ask, who benefits from this manufactured crisis that is aimed at driving a wedge between Korea and Japan in particular, both close US allies.
Personally, I find this depressing but I don't see the US polity as being a reliable partner for at least a generation. Definite Britain after Suez vibes right now.
Practically? In a germane context? I don't think that delineation exists in geopolitics.
Every U.S. ally under its nuclear umbrella trusts its life with D.C. Same with NATO and AUKUS and other defensive partnerships.