It’s law and order with a bit of “thou shall not steal”. There’re people who never question the root cause.

Totally agree about WhatsApp as I no longer use it due FB shenanigans. A lot of people do though which is interesting as it so easy to move.

Using things like Signal and WhatsApp may reduce your footprint further.

I’ve used wifi calling from hotel rooms overseas as well as locations where mobile coverage is poor and it works fine. I suspect (not know) that the voice network provider knows pretty much where your location is though.