I see this more about wanting to be right about something for the sake of standing around saying "I told you so."
Quite possibly the easiest thing to predict in the NFL is failure. Failure in a player. Failure in a coach, a GM, a scheme, or a play. There is so much failure at every level at virtually every team, how difficult is it to see it coming? Not difficult at all. It's easier than trying to predict if Poojer would.
Now count, as an example, how many times Tyrod Taylor throws a bad pass, and someone jumps in to a game thread and say something stupid like "I guess now all you TT fanboys are starting see the light, now. If only you listened to me earlier!!!" or "I've seen enough of McDermott to know it's time to move on!"
It satisfies some people for some reason.