Agreed. Darnold for $100M wasn't the answer. He's a "shrinker" when it matters like Cousins was. Besides, at already the highest player salary budget in the NFL, I don't think that contract was even a consideration. Some of that is on Jefferson commanding a giant contract.
The problem has been in every decision made since Darnold walked. This includes the head coach running one of the most pass heavy QB dependent offenses in the NFL with a QB room that started the year with 2 rookies and a washed up veteran that didn't even have a pre-season. It doesn't work.