Examples of Actions That Will Lead to Disciplinary Action - link to this guideline
Deliberately misquoting other members
Using more than one FT account to mislead posters
Using FlyerTalk for commercial purposes
Posting private emails and messages without the author's permission
Attempting to defraud any member
Discussing specific moderator actions
Personal attacks or threats on other members or groups
Obscene or offensive language/material
Furthering illegal activity
Invasion of another's privacy ....
Granted, one does not have much of an expectation of privacy in public, but I doubt that FT wants to be known as the place where folks secretly take photos of other people and then others gather around to openly mock them.
Nor would I think that one who repeatedly takes photos of other people's feet -- and starts threads with them -- would be in a position to lecture others about their low standards. (To say nothing of the other busybody threads like accusing a pilot of drinking while flying.)