Good Morning James,
Most of what you say is correct, some is iffy.........
Without typing as much as you did, because my interest level is not where yours is, bottom line 'legally' is:
The real RIGHT is the RIGHT to remove one's self from any public or private situation that is uncomfortable for whatever reason. We all know this, but basic laws of decency in most societies give us an unwritten right not to be exposed to these situations. These laws were probably put in place to protect children for the most part, nonetheless, they exist.
This RIGHT is prevalent in most civilized societies.......SO, written and holy water blessed or NOT, the RIGHT does exist James......again, plain and simple......
I couldn't agree more Doug. It's just that JRB has so far refrained from a detailed explanation that would tell us whether what he observed crossed the boundary of common decency. So he exercise the right he does have and that you just described....the right to remove himself.