You do realize Stafford got big contracts before he won a super bowl, right? He got a huge extension in Detroit, and he didn't win anything. Carr just got a big contract. Remind me of his success? Herbert will get a huge contract after this year regardless of how well the Chargers play. Prior success is not what get QBs extensions. How good they are and what the team thinks he's capable of is what gets them extensions. That's why Dak got an extension. Although I didn't agree with it.
You are correct, they did and im not saying that Dak didn't deserve his contract or the others deserved theirs. What am i saying, is that people are unhappy with Dak's contract because he has had little to no success. There were fans in Detroit who didn't like Stafford getting his contract when he hadn't done anything. Same thing with Carr. I'm not saying that Dak shouldn't have gotten his contract, but merely stating the simple fact:
People are mad over Dak's contract because he didn't have playoff success before the contract, and he still hasn't had playoff success after it. IF Dak turns around this year and wins multiple playoff games and even a superbowl, the fans will be fine with the contract.
People aren't mad over Stafford's new contract because he just won a SB. If Stafford flops and turns into Joe Flacco 2.0 those same fans will turn against that contract.
At the end of the day success is what will change people's mind. If you win playoff games, and win SB's no one will care how much you get paid. Blindly labeling people haters just because they don't like something, is just as weak as blindly labeling people homers just because they like something.
I, unlike what a certain person believes, actually likes Dak. I think he can be elite QB. But his biggest flaw his is inability to force defense's to bend to his will. If he can take the next step the cowboys can easily dominate the NFC east, and contend for multiple SB's. But at the same time, he's running out of time and excuses for losing.