I won't go that far.
I will say stubbornness is not the right way. Adapt.
Is that not objectively true?
Steve Kerr's resume is one of the best in NBA history for a six year career. I'm not saying he's a bum but his resume is greater than his abilities and people like him are often shielded from criticism based on accomplishments which aren't fully theirs. He's not indispensable. And if a fifth of his teams games could be argued to have been lost because of him as you asserted, his job security should be an issue.

Got Embiid playin like an MVP not doing stupid shit and even has the Beige bitch being more aggresive now setting double screens for him to get to the rim.