Did the penalty impact the play? Yes or no. If it's yes, you gotta blow the whistle. In the case of a receiver getting his jersey tugged illegally and it impacting his route, that's gotta be called.

In one of the angles you can see a Ute defensive lineman get his jersey held a little bit, which would have been really ticky tack had they called it but, especially because he was getting double teamed and wasn't really trying to disengage or breakaway. He wasn't going to disrupt the play regardless.