Not in Australia where it is illegal for the police to touch your phone.

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.

It depends on what the publishers publish for. If it’s money then Peertube is probably not attractive.