The adults in charge of BYU aren't listening to them, and rightfully won't listen to them. Bronco isn't going anywhere until he has 2 consecutive losing seasons -- at least.
It's far more likely Bronco leaves on his own terms.
After watching the "Fire Bronco" team's act this season -- which you rightfully point out met the expectation of most BYU fans assuming a healthy Taysom -- removes them from the realm of "reason" for me.
They're just whiners who are going to whine. And this is where they choose to vent.