Suppose someone hired a private detective to gather as much personal information as they possibly could on an individual, with the sole purpose of getting back at the individual by having everything about them publicly known.
There are, one would point out, rules against "some" of this in certain public spaces. Mentioned someone's address on Live TV? Boom, you're gonna get the cops. Mentioned on Reddit that a certain individual is the alt of another individual? You're gonna get a strike. However, it appears this kind of thing differs between contexts. For example, one public space might consider using someone's actual name to be TMI and discipline against that but not consider it oversharing to mention their hometown, while another might be the reverse, considering revealing their hometown to be overdoing it with identifying them while using their name is fine.
I have begun thinking of this question because someone I know is in the exact situation with the whole private investigator thing. Ironically, the one who hired the private investigator (who we'll call Person A) mentions she calls it inappropriate that she (the one the private investigator was sent to harass, we'll call her Person B) isn't afraid to refer to Person A and her family members without nominal restraint when in a broadcasted setting, but doesn't see it as the same kind of red flag to share Person B's school photos, places of residence, aliases (though some have been falsely attributed to her), and medical conditions (though for those she shares them to deny they exist). Person B says Person A has shared that info before in the form of Person A's own aliases which make reference to that info which was "as obvious as Lex Luthor owning LexCorp". Meanwhile, Person B says the same thing about Person A and the medical conditions and the media content starring her while saying of her places of residence that it's only wrong if Person A ever planned to do anything with that information, as well as saying her findings about Person B's supposed aliases publicly but not providing proofs because Person A thinks the proofs would be oversharing, instead encouraging anyone to do such an investigation on their own if they want proofs, this encouragement which Person A doesn't consider oversharing.
You can consider that a footnote, but that's what inspired me to think of asking. Suppose, then, you were to write a definition of unruly reference to personal details versus fair game references to personal details, and this definition had to be one where, if you acted within it, it's always considered oversharing/overreferencing, while if you acted outside of it, you are never considered referentially guilty, and this definition had to be applicable across anything and everything in existence considered to fall under the definition of a public space/venue/utility. What would your definition be?
Adding this because I consider it interesting, one interesting response I've been told by this person is to treat it like copyright, which she says is the view she holds. That is, something like a name or identifying code number thing or whatnot should not be shared because it's an extension of the individual and therefore would fall under copyright infringement.
You don't have to repeat my views if you don't want to, you did that with the commentary already.