That is not what GDPR requires

There is no problem storing data outside of the EU if GDPR standards are met. Switzerland, Iceland, Australia are some examples. I know it might be surprising from a US perspective, but there might be a need to change because of laws made by non-US citizens

I don’t see how you derive at that interpretation. Can you point to a court ruling that supports this? Schrems 2 alone doesn’t.

Yes, but that does not mean PII can’t be hosted in the US. It means you can’t give your users’ PII to 3rd parties without their consent, which is a good thing in my book

Let’s take Facebook as an example. I avoid them, that’s why I don’t visit their site. If I visit yours, I definitely expect you to not send data about my visits to them. That’s why GDPR requires you to ask for my consent before you do so.