I think you make some fair points but what does grittiness matter if you can't play?
Barnes had a 50% TS and a 17% turnover rate. He couldn't score and he couldn't pass. He took a lot of chances defensively and maybe 1 out of 5 paid off. The other chances resulted in taking himself out of the play and leaving teammates at a disadvantage. I like grit as much as the next guy (gal) (fan) but it has to come in the context of a skillset that enables the player to be a positive contributor more often than not.
I was implying Barnes enabled Boogie's behavior. He was suppose to be a calming influence. I am not going to recount history but let's just recall after the discussion of the max extension there was incident with the Warriors game and flipping the bird and exchange of words with the elderly Bee reporter. His ongoing behavioral issues did not make the front office feel too generous about shelling out $200 million. Ultimately I think you will agree that Boogie is responsible for his own behavior but I think Barnes contributed to his perception that he was constantly victimized a misunderstood, a pseudo martyr in baggy shorts. Barnes liked to play the victim role, being perceived unfairly. Being around Boogie fueled this unhealthy delusion, borderline paranoid anytime he sees someone in black and white striped shirt.
Now fast forward to today: Z-Boing has grit. But he can't play anymore. Joerger and this front office rewarded him with a contract based on the 31 year old Z-Boing not present version who is a lumbering slug after never being an elite athlete to begin with. This is the judgement we are suppose to defer and trust to as fans? I don't think so. They are capable of getting it right and wrong as reflective of us all and human nature! There was an extreme lack of vision IMO to pair a "slug" with "thoroughbreds". I was on a high post-draft with the Kings getting my franchise player Fox so I was not critical at the time of the signing. I liked the idea of easing Skal into starter minutes and still do....
But upon reflection after the high of the draft wore off, the writing was on the wall for Z-Bo. He was a desperate grab with rear view vision instead of forward vision. Z-Boing is Barnes Part II only worse due to the size of the contract. There were better options if we were patient and opportunistic.
And one last thing if you are a defending Matt Barnes for his play last year, then are you suggesting that the other 29 teams are inaccurate in their implicit assessment of him as a player? If his grit is so valuable in the context you described why is he out of the league? The answer to this is simple. There has to be a degree of efficiency on the offensive end relative to what you offer on defensive end. At this point in his career, JUST LIKE Z-BOING, Barnes is a negative offensive player AND a negative defensive player...
And unlike math the product of two negatives do NOT make a positive!