Interesting. Possibly useful to some. I have also discovered that the simplest, most privacy-friendly way to update location is just to do it manually when you change location.
I have a simple script that does this by querying OpenStreetMap’s Nominatim server with the city name. It feeds the resulting coordinates thru a Python library that deduces the timezone, and sets the system time to this.
Your point is a bit off-topic but I for one agree with you.