Yes they are gutsy. They’re so casual about it is why often get away with it. If they acted sneaky would draw more attention. Highland Park seems to be hit a lot.
I lived in small town where someone would hit the rural boxes about first of month, looking for checks. It was about time they started Direct Deposit for SS and advised people change. Some suspects got caught with all kinds of mail in their possession after were spotted. It pays for neighbors keeping an eye out on others.