Well they do. If they didn't care and weren't planning to comply with EU rulings, they wouldn't have put a block in place to avoid processing data of EU citizens.

(Also, 90% of complying with GDPR is just ethics -- tell if you sell data to third parties, ask consent if you want to do nonessential processing, etc. -- and 10% is adding boilerplate text like reiterating your rights. But that's a bit of a separate discussion, I just feel like most people are not aware of this when starting these discussions and it might be good to know when talking about the topic.)

GDPR didn't really work out that way, everybody still tries to collect and sell as much data as possible, only with more clicks. But that's besides the point.

To be honest I also don't see the point of the EU blocks, as you say. I assumed it was mostly just lazyness and unwillingness to deal with the issue at all.

Evidently they don't, since I live in the EU and I was able to bypass their retarded IP-block in one click.