Re: Slippery slope
"Can the EU fine that website for allowing under 18 yo's to get a subscription and view the content of the site, even though it is not based in the EU and is following the local laws?"
IMHO yes they can. The website is "doing business" with someone in the EU, so the same rules apply. That's why some American sites just opted for the option of blocking traffic from the EU rather than change their setup in time for GDPR rollout.