Yes they do exist becuase of the GDPR, but what's your point? So the privacy law that is regulating tracking and data transfer - especially when ambiguous to the user - is to blame and not the companies performing these shady practices? The companies that then make a cookie banner cat-and-mouse game with dark patterns to trick users into "consenting" anyways, although it was clear from the beginning that many of these practices are illegal, a fact that jurisdictional takes some time to establish. But sure, the law which puts users' privacy at the center is to blame and not these companies.