This is one of the most annoying things about the community as a whole. Why do Luna fans insist on constantly mentioning their precious Princess almost every time someone posts or talks about Celestia. Its getting old and very obnoxious. Have you seen Celestia fans constantly bring up or mention Celestia everytime something Luna-related is posted? If so, it’s nowhere on the level of Luna fans constantly bringing up Luna on Celestia posts.  
All this really proves is how obnoxious the Luna fanbase is. Again, how would you like it if Celestia fans constantly mentioned Celestia on Luna posts all the time? Wouldn’t you be annoyed by that? So why isn’t this being seen as an issue?