Sure. In such a scenario I could have cameras in place if I’m super paranoid. In my experience repair people have been extremely professional and have a reputation to uphold, so if I can’t be at home and a repair needs to happen, I don’t see a problem if that convenience is important to me.

Well you forgot about my micro drone that follows them around filming their every move.

… except unironically

Different areas of the world have different trust levels. In northern Europe nobody would think twice about letting in the repairman, we trust each other. It is a great place to live.