Disagree.
College football is relevant in Wisconsin, Nebraska, Missouri, Ohio, West Virginia, and Arkansas, where only one P5 school dominates the state.
Kansas-Kansas State is an example where it's hard to argue that two P5 schools is actually helping football relevance.
I assert that an equal CSU undermines CFB in Colorado, just like adding a second NFL team in Colorado would undermine support for the Broncos.
When CSU is out of the picture, college football fans across the front range would have more reason to pull for CU beating USC, Oregon, Washington, and other Pac-12 foes.
As it stands now, the RMS is the biggest CFB spectacle in the state, where almost half in attendance either don't care about CU or want to see them lose after Labor Day weekend.