What's so silly about his 'petty' comments is that if he views the difference as that minor, why isn't he putting it aside to come back and play with his teammates? 'Petty' goes both ways.
I also don't understand why he thinks is request is so minor. Moving $4M from the last year of his contract to the 2nd-to-last year of his contract is a major, major imposition on a team's cap. I also don't believe for a second that he's going to feel happy playing for $2.8M in the last year of his contract - he'll come back and want to renegotiate/sign an extension that will tack on money for that year, and get paid twice.
If you 'don't want to wait until nearly age 30' to renegotiate, then don't sign a 5-year contract. But you did. You can't un-sign it. Your request is not minor - it's an enormous change to the tail end of your contract.
I obviously want us to win by any means possible, but it would give me great joy to see the defense dominate, and Dion Bailey have a great game. I love Kam, and will forgive him if he comes back, but at this point, I'd be really disappointed in the team if they yield an inch.