I think if you browse through the signing day threads, you will see most of them are pretty heavily tilted in the "pro-Darnold" direction. Even now the majority are in that camp. Some of it is just fairly typical fan homerism, which is completely understandable.
I think the skeptics and flat out anti-Darnold crowd(which is perhaps a little larger than the anti-Teddy crowd was) are a relative minority.
Absolutely agree with the rest of your post. If Darnold flames out, the fans are going to be up in arms and the staff will be firmly on the hot seat.