The server-side "analytics" of 20 years ago was for aggregate reports on popular pages, number of users, their browsers and OSs and maybe their geo-location; so

The server-side "analytics" of 20 years ago was for aggregate reports on popular pages, number of users, their browsers and OSs and maybe their geo-location; solely for the use of the site owners to optimize and whatnot. This abomination Google is proposing is unblockable cross-site tracking of people's activities. That site owners get to see some of that data too is insignificant, their value comes from being able to track people across the web. I'd bet Google would even offer this proxy service "for free" depending on how much data they can hoover from the site.