Yes, some of that tracking personalises the site, which you could argue is for the user — but I don’t want personal. I want to learn, which means reading viewpoints I wouldn’t have indicated a preference for.
And that’s in the developed world; we’re in danger of excluding users in developing countries from much of “our” web. We could make a huge dent in the #digitaldivide just by building sites (or “lite” versions of sites) with less bloat.
The social network of the future: No ads, no corporate surveillance, ethical design, and decentralization! Own your data with Mastodon!