Earlier quoted context omitted.
The cookie warnings are a result of companies not taking a pretty obvious hint: don't do tracking.
The European Commission's own announcement of the fine against Apple has a cookie banner: https://ec.europa.eu/commission/presscorner/detail/en/ip_24_... "This site uses cookies to offer you a better browsing experience." Which of course is total crap. There's no better experience, only a worse experience with the banner.
They seems to use this https://piwik.pro/, which as far as i read seems ok (i did not audit the code personally), i think this data might be legit useful for UX (im really shit a UX, you should ask people working on it though).