>for some reason be anally annihilated over one of the most acclaimed directors of all time turning one of your most acclaimed books of all time in...

There's a copypasta about how Kubrick was searching for his next project. I have no idea if it's true or not, but it's a very amusing mental image. He wanted to adapt some book, something recent, maybe. He had a bunch of books in his workspace, he'd read a page or two from the front at random, and if he didn't like the book's "elevator pitch" of itself, tone, basic story setup etc, he'd discard the book by throwing it against the wall, which made a THUNK noise. He disposed of a lot of books in this way, and his assistant, who was in the next room, could hear what he was doing and understood what was going on. THUNK. THUNK. THUNK. Then he picked up The Shining, leafed through it, saw something he liked. A few minutes passed. No THUNK noise. the assistant knew he'd got his story.

I imagine that he thought the details and the prose were all trash (it is King, after all, and Kubrick is a man of some taste), but he liked the essential ideas and realized that he could impose his own aesthetic on the work. And King is a popular guy nowadays so the film should do well (money-wise) in any event. All this must have been part of his calculation, I should think.

yeah but King was pissed at how close to home it hit, it embarrassed him and he took it as a personal jab

King's beef is the key point that book Jack is a good man that can blame the spirits (booze and ghosts) for everything and redeems himself while movie Jack is an unstable butthole from the outset. Good men don't become alcoholics with anger management issues who beat kids. You can further extrapolate upon this with how little influence the Overlook actually has in the movie, limited to psychologically tormenting people and opening a lock like a lowly poltergeist, compared to King's vision where it was capable of outright possession, flinging chairs, and animating topiary animals. The movie Overlook was a devil on your shoulder whispering in your ear and testing your character, and movie Jack (and by extension, King, according to Kubrick) was weak of character. King hates that Kubrick clearly understood this and not only willfully chose not to indulge his masturbatory pity party, but may have even gone out of his way to insult him through his own work.

It's hilarious to think about, especially because Kubrick probably became annoyed by King's meddling early in production. It's entirely possibly that spite motivated aspects of the movie.
>King, for his part, disavowed Nicholson because he thought that, since his part in One Flew Over the Cuckoo's Nest, the viewer would tend to consider him an unstable individual from the beginning. For this reason, King preferred Jon Voight, Michael Moriarty, or Martin Sheen for the role, who would more faithfully represent the profile of the ordinary individual who is gradually driven to madness.[19][20] In any case, from the beginning the writer was told that the actor for the lead role "was not negotiable."[21][22]
>The script was written by the director himself with the collaboration of novel writer Diane Johnson. Kubrick had rejected the initial version of the draft, written by King, as too literal an adaptation of the novel.[42][43]