Note that the issue only affects websites in the EU legal jurisdiction. From the US legal standpoint, that means doing business in the EU. The body text has the qualification, but the headline does not.
The Court of Justice of the EU—likely without realizing it—just completely shit the bed and made it effectively impossible to run any website in the entirety of the EU that hosts user-generated content.
"in the entirety of the EU"
That's kinda clickbaity. This isn't going to apply to, say, lemmy.today.