Bitcoin isn’t private, you can see how much BTC a sender or recipient is holding and what transactions they’ve made. I’d argue that without privacy mitigations such as a mixing service it’s even less private than credit cards. They should have gone with Monero instead.

Rainlendar is good and works on Windows and Linux. It’s not open source though, and some features such as Caldav support require a pro license for €10

Yeah it’s not my ideal solution either, but I don’t see modern cars getting any better on privacy. If some manufacturer made a stripped down, privacy preserving car I’d be all about it.

Yep, this is the reason I won’t get an EV or any modern car. Probably gonna be driving 2016 cars or older the rest of my life.