Why, because they have a different opinion than you do? More than one way to skin a cat.
Please show me in the last 20 years where a SB winning team has paid a QB more than 13% of the cap in that year. Go ahead. I'll wait.
While I wait, here is something for you. The 2021 salary cap is 180 million. 40 million is a hair over 22%. Over a fifth of the cap on ONE PLAYER. The defense needs help. You're not going to afford anything but bargain bin help if Dak gets 40+.
So signing Dak to 40+ torpedoes the team's chances at championships. They might be competitive, but they'll get slaughtered in the playoffs if they even make them. The proof of that is out there.
I'm a fan of Dak. I hope he's the QB for the foreseeable future, but at 40+? No way.