@hungry-skeleton once said that Jax was autistic and like thinking back on how he acts, yeah.
And I think, while played up for laughs, his anger issues in Season 16 are an extension of that. I think back towards this sequence
I don't think this is him being mad with power, I think he's been mentally fucked by rushing into the Hollywood industrial complex too fast for his little brain to understand what is and isn't reasonable.
Think about it, he's been looking up to greats like Kubrick. People who were AWFUL. Not just morally but like...to their ACTORS and CREW. He thinks this treatment is normal. If he started indie he wouldn't have the budgets to even consider this stupid extravagant bullshit, and he would've learned what a normal/good workplace environment on set is.
And then look how he responds when he sees Carolina & Wash, he's brought back to a happy mood, one where he doesn't think about studio mandates or budget cuts or accidents on set. He wanted to make blockbusters so bad he decided to jump head first into the biggest project of his fucking life and it ruined him.