We all engage in some virtue signal in order to get along with people of different opinions. It's not empty. It's a way of showing that you share some common understanding of reality. You didn't make a statement on the CU fan behavior, so how should I know what you think?
"Bulletin board material" is certainly as old as sport itself, but it's the degree to which Sanders has utilized it that frustrates many of us outside the Buffalo compound.
Anyway, if I were you, I'd be enjoying the 3-0 start instead of catching rhetorical bullets for Sanders on an opponent's message board.