that is the real question. What is most important to Cousins? Winning, or getting the biggest possible contract?
Other QB's agree to renegotiate their contracts to help the team with cap space, so that the team can add other players and improve the roster. It's been reported that Cousins' agent has said that Cousins will not take less money, and in fact, wants to be paid more because the salary cap is expected to go up in future years.
So, it seems that his attitude is "I want mine," not "let me help make the team better."
If I was a veteran like Thielen who has renegotiated his contract in the past to help the team, I would be p*ssed at a guy like Cousins who won't do the same thing.