I'm ok with this. I do think college kids push the limits at times (and I was personally part of the chants of "F U Billy" when Tubbs was coaching at OU...and he 100% earned it...and I'm 100% not sorry about it

), but insulting a religion is crossing the line. I do take pride at some of the more clever things KU fans have done that have been 100% spot on, but not offensive.
The time that the kids put together a huge image of the "Tragic Prelude" painting of John Brown when Mizzou came to Lawrence was among the best things ever in my opinion. Tagging Missouri as a "slave state' responsible for the deaths of innocent people by way of a historical painting that I'm sure some fans had to google to understand was classic.
Nevertheless, I think it's totally acceptable for the league to fine a school when they cross the line or disrupt the game.