[lucianbr]

The analytics services gather enough detail to personally identify you. You know, IP, browser fingerprint, geolocation, corroborated with other sites you visited gets you gender, age bracket, lifestyle... the noose slowly tightens. This stuff is public knowledge and has been discussed ad nauseam.

How else than technically should they comply with the GDPR? Morally? They don't do that either. They gather as much as possible and deduce as much as possible from it. Are you actually claiming services like Google Analytics aren't interested in knowing much about a site's visitors?