EU citizen might register in which case they could be forced to comply or suffer fines
https://www.theverge.com/2016/7/20/12243592/kickass-torrents...
That's why there are so many shitty american middle-of-nowhere Daily Star Gazettes that block EU visitors with a laughable "our EU visitors are important for us". It seems that they agree with GDPR that it covers them if they serve anything to EU citizens.