For Prototypr, instead of Google Analytics, I opted for the Open Source of Matomo analytics, as it doesn't have all that extra data tracking that Google analytics uses. It's been running since May when the new Prototypr 3 launched.
On Friday, I added an analytics dashboard for writers to see a breakdown of stats on the articles they publish on the platform. Using the Matomo API, you can get the viewing stats for any given post, and even various charts. Check it out:

If you have any questions on how I've got this set up, let me know!
There's tonnes of other alternatives for privacy-friendly analytics such as Simple Analytics, Fathom, and many more on No More Google. Have a look and drop a comment if you have a good experience with something else!