I can't believe how many times I've seen this happen. At least 3x last year.

Waiting to board a packed flight at major hub as AA Plt.
Stand by Priority Access area as First Class boards. GA calls for Plat members and (usually older) gentleman pushes through to the front. GA looks at BP and asks man to go back as he is Group 4. He protests and states he is most definitely platinum and proudly shows Citi AA Plat card to prove it. GA tries to explain that card means nothing. 1-2 minutes wasted as man tries to convince GA and realt PLT line up behind him.

Has anyone else seen this happen?