The word fact does not mean what you think it does and in fact I was correct so you were wrong on two fronts.
What Garop signed his contract it was the highest paid contract in the NFL. He has played like a mediocre to below average starter in the NFL which makes it a perfect case study on whether such a contract is a hindrance or not to a teams success. They made the Super Bowl (and barring them forgetting that they are running team would have won it) because they had been drafting at the top of the draft and you get better players when you draft at the top. Hitting those 1st and 2nd round picks is how you build the foundation to win a Super Bowl and you are not going to hit many home runs drafting in the late teens and early 20s, which is what having a franchise QB does.
NO, Green Bay, Pitt, and now add in KC, Balt, and Houston, these teams do not get to be bad football teams. They will not be drafting in the top 15 of the draft barring either having a massive amount of injuries or an injury to said QB and for those teams it makes it far harder to reload on talent. Succeeding in the NFL is hard. Except for the Patriots dynasties do not exist anymore because the NFL is structured so that no team can stay good for too long a period of time before having to be bad for a couple seasons before, if your team drafts well, having another 5-6 year run. If you want a chance at said run though, you need a franchise QB. The data clearly shows you do not make it far into the playoffs without one, but it ALSO shows you CAN pay one and make it far. Disagreeing with this is not arguing with me, its arguing with reality and reality tends to win most arguments. The Math says what it says.
Just as drafting a QB is statistically a bad way to try and find a new one (greater than 2/3 failure rate in the first round alone), not having one is provably even worse which is why they will get paid and will continue to get paid and these contracts will look like nothing in a couple years which is why KC probably wants to try and do Mahomes now rather than next year, but that might be tricky for them.
Edit: as a note franchise QBs do not hit free agency often but when they do teams like Denver and SF can take them and take a roster of high draft picks and suddenly they are a legit Super Bowl contender.