I wonder by if the US considers this “supporting a terrorist organization”.

Donate a significant amount of money, and you can get a free trip to the new gulag in El Salvador. Or maybe gitmo.

I wonder if the EU or UK does.

Maybe if they use encryption, which would make them all pedophiles according to those governments. Hope you have your VPNs ready if visiting countries without a free internet, like North Korea, China, UK, or EU.

Don't give the government any ideas

Maybe.

Thankfully I don't live in the US, and likely won't set foot there ever again.

US probably considers anything impairing profits, stock prices, or enterprise value terrorist activity at this point.