GDPR has not been set against domainers and domaining or to oppose Europe to the rest of the world. We all know that.
It's been set for privacy and to let citizens managing thir privacy online.
Let me illustrate with an example. Like many people, i've tried blogging using wordpress and i've also registered an avatar on gravatar. On both websites, i've left my private informations. Once i've decided to stop blogging, i've also decided to quit wordpress and gravatar as i was not using them anymore. Guess what ? Until the 25th of may, both of them didn't have a deleting account fonction. So that means that these two websites can keep your private informations for life and doing whatever they want ! I was not the master of my own identity, email address, mail address and phone number ! Thanks to GDPR, they cannot do that anymore. So i think that's a very good thing.
Another example for GDPR is fighting against fraud. I don't know how it is outside Europe but here fraud using personal informations is quite important. Frauders collect your personal informations you leave on websites (they also can use the whois database) and make false documents (ID, salary slips, ...) to obtain credits for example. For the persons who have been abused, it is very tough and some of them are in big trouble as they must prove that their identities have been stolen. So, if private informations are more difficult to get for frauders, that's also a very good thing.
Nothing is perfect for sure. But at least GDPR gives back to citizens the power of administrating their private informations online and protects them more.