Colorado brings Deion Sanders who is very polarizing, made a mockery of the Transfer Portal.
ASU thought they were too good for the "Truck Stop Hillbilly" conference when their AD said He "wouldn't be going to Morgantown"
Arizona finished last season 10-3 and Beat Utah 42-18 last year. They return their QB (heisman candidate) and are ranked in the top 20.
Nobody hated Oklahoma like they do Utah when Oklahoma won 7 straight BIG12 titles in the 2010's.

So why is almost all of the hate directed at Utah?

Personally, I think it's their arrogance. For a team that hasn't even played, let alone won a BIG12 Conference game. They think they are a "Blue Blood" like USC but in reality, Both Cal and Stanford have won Natty's, Oregon St. has won a Heisman and Washington St has the same number of Rose Bowl losses as Utah.