Jacuzz
The other thing you are forgetting is that the league now is vastly different from the NFL of the 70s. At that time you could afford to be patient. There was no free agency, no salary cap, and QBs didn’t get contracts close to what they do now. If you had a bad QB for 3-4 years, no big deal. You pay him a crap contract commensurate with his productivity, you build up the rest of your team, knowing that they will still be around in 4-5 years and wait it out.
That model doesn’t work anymore. The only cheap WB contracts are guys on a rookie deal, like KP. You need them to be productive right away so you can spend cap money elsewhere to build the rest of your roster. If KP becomes OK, but not great, he will simply not be worth the money he will get after his rookie deal is up. Teams that win Supwr Bowls either have productive young QBs (like SF) or elite, all-pro, HOF-caliber guys (like KC now and NE for the previous decade or so). Having a Kirk Cousins-type QB won’t cut it (unless he’s on a rookie deal), and KP right now is looking up at Cousins in the QB pecking order.
You can’t just wait and hope anymore. KP will undoubtedly start the year in 2024 as QB1. He had better get his shit together NOW, or the team will have no choice but to move on. Otherwise the seasons of 9-10 wins and just squeaking into the playoffs will end and the team will suck out loud. A QB with KPs current production on a veteran QB contract will ensure that - the won’t have cap space to assemble a good team around a bad to mediocre QB, like the early to mid 70s Steelers did