Overton window got yeeted so far to the right it ended up hitting 88mph and travelling back to 1930s germany

At least in Canada, most people I know think Liberal = anything left, Conservative = anything right. Maybe Americans are the same.

The right and left are subjective terms. It really depends where you live and people will be more or less left/right.

As a Canadian I think the American conservatives are right religious nuts rather than just right extremist.

why are American conservatives called conservatives?

For a full depth, non-lemmy-grade answer, a wikipedia article on US political ideologies explains the history & meanings.

In my country(that is in the EU), there are people that would call anyone that says anything remotely positive about gay people woke communists trying to bring Nicolae Ceaușescu back from the dead

It comes down to how American conservatives are extremely hostile to any kind of change whatsoever. In more extreme cases, like MAGA, QAnon, TeaParty, etc. that hostility towards change can lead to fear, which can lead to things like violence, terrorism, hate groups, etc. In short, they are called conservatives because they wish above all else to "conserve" the status quo (as they see it), that often being racism, sexism, slavery, xenophobia, hate groups, misogyny, white supremacy, Christian fascism, etc.

That is not a question and you know it isn't

That is exactly American brainwashing. You are correct.

The name is inherently nonsense. They aren’t “conserving” anything.