This is quite timely! I'm in the middle of transitioning away from google analytics for my apps/sites (to de-google-ify as much as possible). However, my plan was to implement self-hosted matomo/piwik. In fact, i was considering only implementing the server log-reading feature (and not the javascript tracker script) primarily to lessen webpage bloat but also because my analytics needs are quite basic and minimal. (I'd like to say that i'm some awesome digital marketer, and "need all the data things", but honestly, i really can't justify all that for my small apps/sites. ;-)

That being said, i do love seeing "roll your own" examples - which help foster creativity, remind us that the big silos are not the only ones that can actually produce helpful utilities and platforms, and to further de-centralize stuff on the web (indieweb baby!) Kudos @pcmaffey!