I agree that a man with a beard in a dress is shocking and perhaps even radicalizing to many or most people - not just in America but Europe itself. The trans issue remains a big controversy. But most Americans have probably never even heard of Eurovision. Maybe they saw a meme about it or something like that, but I don’t think this is what causes Americans to criticize Europe. In recent times, I would say the biggest topics are crimes committed in Europe by Islamic Arab refugees/immigrants (especially against women and minors), and attacks against American companies or free speech.

There is a lot of truth and justification for Americans to be concerned about both these topics - but judging by the kind of things posted by Donald Trump, Elon Musk, and the web of politicians/businessmen connected to them, I would say a bit part of why Americans “hate” Europe is simply because they have been radicalized by the extremist rhetoric used by the people they follow or look up to.