And second thing - I actually think that it's a great idea as a way to protest and to show how senseless it is to impose such broad restrictions on the act of collecting the data.
Don't get me wrong - I don't think GDPR is a bad idea in general. I just think that people haven't even began to realize the implications of it. It's not just a "you had one thing" type of thing to follow through. It's a terrible manifesto which completely redefines how user data should be treated, without proper guidance on what's really expected.
For example - if a user logs in and decides to opt-out of all data collection but there's no cookie on him - how are you supposed to know it's the same person if you've logged his IP address the last time he used your website? And if you are using a storage medium that doesn't support one-off removals of data, what are you expected to do? This is just one out of thousands of potential examples of how broad this is, and that's even before talking the legal fees and UI changes you need to do to make sure you're letting your users know everything they have to know about what you do with their data.
BTW - MaxMind are going to get sued by so many companies because of misidentification :)