I’d assume that most governments (other than the US) don’t have easy access even if E2EE in WhatsApp etc. is a sham - these companies are definitely intent on keeping the pretense up, and smaller countries aren’t able to disprove it.

In every room? That seems unlikely.

You do need a drill to get through all the walls, though.

I live in a walkable city and mostly only go out to go to the supermarket or post office. My physical health sucks, I fear to even imagine how bad it would be if I drove everywhere by car.