Why?
There’s nothing that says Trey can’t develop. Everyone keeps saying he’s green and he hasn’t played much yet they have these weird expectations of him. They didn’t give up anything significant to hold his rights.
Dak lucked into an already prebuilt team situation, has had eight years of actual playing, learning, and being coddled, and he still hasn’t helped the team advance anywhere significant in the playoffs. He’s not going to magically get better.
Dak got his new contract because of Jerry. Any other SB competing organization would’ve moved on.