I'll have to disagree with you here. We saw 2016 Derek Carr and, skill wise, Winston is actually a better QB than most in the league. (his biggest issue has always been trusting his arm and receivers a little too much).
I know I brought it up, but I don't want to turn this into a Jameis debate. We've had plenty of those. But both of these guys have been in the league for close to a decade, with several head coaches and coordinators. They have a combined 2 playoff appearances (both losses by Carr). I can't remember a revival of a bad QB career ever occurring this far into a QBs career. Not that they can't be starting QBs, but that they aren't turning into the strong part of a team. That is what I'm talking about. I acknowledge coaching is essential for these kind of players, but it takes a unicorn of a coach to turn them into stars you don't have to worry about. We'll never know what Payton could have done with Jameis ( I thought he made him less likely to turn the ball over, but also made him boring). I think that is where we are at the moment. We either need a unicorn coach for our current QBs or we need a new QB and coach. Coach we can do now, QB we can do in the draft though Carr will be around for a while.