German here. I never thought this was about privacy, but there is definitely a tendency to follow the rules because they are The Rules regardless of how much sense they make - and then judge others by it, or go into Cover Your Ass mode because you fear to be judged yourself.

> If it’s a long one, strategically placed right by the spot you’re expected to deposit your shoes - a mensch. If it’s wooden, a hippy mensch. If it’s metal, a right-wing mensch.

I got a long one, made of metal, but I never knew it makes you right-wing! I just bought it because it's by far the most sturdy one available and I absolutely can't stand the plastic (or small) ones.