I don't close the door when I'm taking a crap because I have something to hide, I do it for privacy.
And whether people are breaking the rules or not, the more someone knows about you the easier it is for them to influence and manipulate you. (This is the basis of the online advertising industry.)
I think people who don't value privacy must not know what it is.
To build on your analogy, one could easily imagine a situation where there was no need to close the toilet door - because there's no-one around, or if there is, no-one cares about you taking a crap, and no-one pays any attention. In this case, 'privacy' is unnecessary.
(You, personally, in 2026 feel the need to close the door for 'privacy' because of some combination of societal programming, learned experience, personal psychology, choice, whatever.)
And whether people are breaking the rules or not, the more someone knows about you the easier it is for them to influence and manipulate you. (This is the basis of the online advertising industry.)
I think people who don't value privacy must not know what it is.