It's a desperate need to be right. I'm truly not trying to re-start the old Romo/Dak feud and I Hope this doesn't end up doing that. But if you want to deal in reality--here's the reality:
Most of the folks you are referring to here, are the same folks who hated Romo's guts. Your AC and Art Clink types, and so forth. The same guys that still regularly interject #9 into any and every discussion about current Cowboys events every chance they get.
When Dak came along and we had that "magical" 2016 season (where Zeke and the O line did all the lifting but Dak got most of the credit), they were convinced they had found their Messiah, and 10 years later they are still desperate to be proven prophetic.
It's really no more complicated than that. If Dak somehow, someway justifies their blind allegiance, they get to say "We were right" in the great debate of this era of Cowboys football. And they refuse to let go of hope that this is going to happen. They will defend him all the way to the grave, hoping against hope that he gives them the chance to tell everyone "I TOLD YOU SO"
Based on this alone--any critique or shade thrown Dak's way must be dealt with in the severest possible fashion, so as to tamp it down.
Nothing is his fault, everyone else is constantly letting him down, and someday you'll know how right they were and how awesome #4 is.
Petty and crazy thought process, but I promise you that's it. Really pay attention to their posts and this will become clear over time.