They don't see security cameras because there are very, very few in Germany and the few that exist are in train stations, or private areas like INSIDE a business, or INSIDE a private estate, pointing inwards since they're seldom allowed to film outwards

Wasn't Germany the original country that forced google maps to censor all houses unless they opt-IN? And faces, and driving plates.

I think they are quite privacy conscious, as a country.

See how StreetView looks like there (or looked), they have trouble being photographed.