That statement, I'm familiar with.
But, there is a fundamental difference in a coach making a quip and a coach taunting a team and their fans holding up fingers.
As to fans, they aren't held to the same standard and they shouldn't be. Of course, the right to brag makes this series as fun as it is and has been.
Personally, the fingers, the statements, and all the other stuff Tubs has done over the years sort of just rolled off my back. It spoke more to him and his attitude towards the game than it offended me.
Not a big deal, in my book.
That said, I also truly believe fan behavior can cross the line, blatantly. Profanity based cheers directed at coaches, no matter who they are, is a serious character flaw. It's not enough to make me judge a fan base in its entirety, but it does cause a certain amount of skepticism when I meet new people who happen to be fans of rival schools.