I look at KU this way. I can't stand them and do not cheer for them unless they are playing the Hawks. But KU already has the clout and has won national championships/made Final Fours. Their fans are obnoxious and that isn't going to get much worse because they are a blue blood and have won titles.
Now if Iowa were to ever make a Final Four, title game or God forbid win a national championship, you will have a whole new level of d-baggery from that fan base. ISU fans would have to leave the state of Iowa.