People all are going to have their opinions. The people shitting on Rex here are the same ones who hate every other coach too, so I just take it in that context.
Any comparisons between Sanchez and Darnold have to factor in the differences with O line, running game, defense and coaching, the results on the field have the final say. There are far better QBs than Sanchez who took longer to win fewer playoff games due to the circumstances around them. We can all make a list of QBs who took their lumps early in their careers, you have to go through that process a lot of the time. Sanchez--and I was one of his biggest supporters--turned out to be fool's gold, he never took the reigns in 2011-2012 when we needed him to. There were other factors but a lot of it is on him. Point being, the Jets didn't "ruin" him, he just wasn't as good as we thought he was going to be. Darnold is a different guy with a completely different set of circumstances. The similarities ended with both leaving USC early and being drafted by the Jets.