I think the main issue is that most people are not on to Denver, they're on to 2018, and with good reason.
The feeling is that this is pretty much a throwaway season with not much meaning to it. If that's the case, why not just go all the way? I'll be at every game but never have I had such little emotion in a season...it's like ok, the real Bills of the future will be here next year.
There is zero chance Tyrod is here next year so every game he starts is like eh, what's the point? Clearly this game plan does not fit him so the faster they get Petermen in, the faster we find out if we even have a back-up for next year.