You have summed up (quite well) the core of how people take extreme binary positions.
If a person sees a great play from a favored player, the halo effect kicks in, and most of the bad plays just get dismissed.
If a person sees a mistake from a player he expects to transfer out, then the good plays are ignored, and the player becomes the worst-ever.
Reality is somewhere in between.
To everyone who has said "Jacurri sucks, Jacurri has terrible accuracy, Jacurri needs to change position", I have been consistent in my responses for quite some time. Jacurri has been inconsistent. He follows a GREAT pass with a bounce pass. And that is the problem.
And that's where "lack of trust" enters in. I am optimistic that our coaches can extract improvement from our players. But when a player is SO up-and-down, the coaches lose trust in what they can do on the field. It's not like anyone thought Jacurri was going to steal wallets out of the locker room, just that they don't know what to expect when he drops back to pass.
If we got "GOAT Jacurri" 75%-80% of the time, he'd be the starter. But when we get "WOAT Jacurri" 50% of the time, the coaches turn to other players who are younger (Emory) or newer (Reese) in the hopes that they can develop THOSE guys.