Yes, I think he'd have sat out or shown up only at week 12 or whenever it is that he needs to get credit for the season and become a FA.
And given up how much $?
Also, if he had shown up Week 12, and the Browns were out of it... they would have no incentive to play him.
So everyone's last impression of him would be a poor / injured '21, and a non-existent '22... vs the alternative of him (possibly) doing something productive with '22. He's a chip on the shoulder guy anyway. I think they could have used that for the year.
I'm glad they gave away that opportunity.