Based on the numbers, it's clear that people do watch.

If they're people who watch Utah (while rooting for the other team) they're more likely to think Utah's plays are dirty than if they're Utah fans.

Therefore it doesn't seem to fit the suggested claim that Utah plays dirty, but nobody notes it, since nobody watches them play.

If you believed that all the viewers were Ute fans and therefore biased to ignore those dirty plays, then you might actually have a stronger case.