Watched just enough for the initial disclaimer, which includes "This is not a statement of fact about Kuwait Airways"
So, I guess parts, or even all, of the story were made up.
Just watched the altercation video in 2x speed (really his description of the altercation - there's not footage of the actual dispute).
tl;dw: apparently a woman in the seat in front of him complained to the purser about his videoing and the purser when bananas on him. He eventually talked to the woman and she was cool once she realized no people were in the videos. But by then the purser got the captain all worked up and it became a 'cultural' thing. After landing he was held back for a scolding from the captain and a couple of Kuwait airline ground staff, but when actual cops came around they told him he was all good and to skedaddle.
My take: mistakes were made on all sides.
No value for me either as drama or as info as I was never, ever going to fly Kuwait anyway. <shrug>