The US didn't even pretend to liberate any of those groups except maybe the Filipinos.
They claimed to defend one set of Vietnamese against another, and didn't even pretend the Indian Wars were for the good of Native Americans.
The Filipinos were actually quite happy the first (Spanish-American War) and third time (World War II). The second time (Filipino-American War), not so much.
We do ourselves a disservice to pretend that every intervention has been a massive failure or worse. It abdicates the specific responsibility of those waging specific wars and invites us to ignore international tragedy.
Suffice to say that both Taiwan and South Korea would not be leading democracies in Asia without US intervention. Yes, both were dictatorships initially.
Are you arguing it would be better if North Korea were running the whole peninsula? And China controlled Taiwan?