Companies that exist in the US don't have to obey EU laws. For instance the UK tried to tell 4chan that it needs to obey the UK Online Safety Act, and 4chan replied with, essentially, "fuck off".

Companies that try to do business in the EU have to follow EU laws because the EU has something that can be used as leverage to make them comply. But if a US company doesn't have any EU presence, there's no need to obey EU laws.