Obviously it is absolutely stupid to say and you look like an idiot doing it now. One of the closest people to me is gay, so I never used the word really aside from the early 2000s, when I was young.
But getting offended for people saying it 10+ years ago? It was thrown around much more regularly then. As I posted, it was a popular joke in big named comedies. Put the focus towards the Blackhawks scandal, not stupid, inconsequential shit like "gay" being written on a white board.