Joe Flaco blazed the trail for average QBs who got hot at the right time to get paid with the hopes that it was his cming out party into the realm of elite QBs.
We all saw how that worked out
Look at it this way: Drew Breeze was barely average in San Diego until he got hot. They still drafted Phillip Rivers thinking Breeze wasnt worth paying big money. Dude went to the Saints and the rest is history. So yeah... i can see how a team will hope their average QB with the right team around him will somehow get hot and become elite.
Jimmy G... I dont know. I need larger samples of seeing dude play before i call it but i wouldnt have given him that huge contract either. But hey im just a casual and people who get paid to scout players thought he was worth it. We'll see