I don't think any QB is worth the amount of money they make. I also don't think a hot dog at the stadium should run you $10 or tickets should be a mortgage payment. Unfortunately, that's the NFL today.
I also understand the salary cap. Without it, teams with large markets, would just out spend the smaller markets, thus giving them an unfair advantage. As far as being pro team, I am also. Do I think paying Dak an enormous amount of money would hurt the team in other areas? Sure. Any sane person would. Having said that... I still feel Dak is entitled to try for, and receive everything he can get.
As fans, we have the luxury of sitting back and saying, "Dak should play for less because it would help the team". The reality of the situation is, Dak owes the team nothing. They drafted him, offered him a contract, Dak fulfilled that contract, and is now looking for a new contract. Dak and his agent would be idiots if they didn't push for everything they could possibly get. I don't think Dak should take less, just so that DE, Safety, etc (whose asking for the moon also) can get signed.
Every time these players take that field, it could be their last NFL game. In fact, it could be the last time they get around under their own power. These players put their body, and future health on the line every weekend so people can be entertained, and owners can make millions and millions of dollars. Hell, posters on this site have said many times, "What have you done lately?" Owners say the same thing. Players are used up and thrown away. If I was Dak, I would be damned if I would give the Multi-Billionaire owner a break, just so he could buy another shiny new toy.
Perhaps you summed it up best in your post. {{I don't care if Dak plays for food stamps. He's not my problem. I want my team to win. I don't care who plays for us.}} Most fans feel the same way... That's why players have to get theirs when they can and ignore all the noise made by fans who could honestly care less about them.