Imagine the optics of United, a company aggressively trying turn the page from a handful of high-profile cascading PR blunders, disciplining or firing a gay flight attendant for kissing his boyfriend onboard.
However you may feel about your own onboard experience being marginalized, to think United would do anything in this case other than throw you a token comp to keep you quiet is totally delusional. My advice would be to stop posting photos to an internet web forum, mind yor own business, and move on.