Eh, this is somewhat true, and he's dug into this a few times. Some is put up for TV, but he's inclined to be annoyed at people that call themselves chefs, take people's money, and serve them sub-par products. In a few shows, like the one with Angela Hartnett where she took over The Connaught, it showed that he's still an angry dude, but that it was needed because he's taking over the restaurant at one of London's finest hotels. Michelin Star places seem to be the same boiling pot of bullying and anger to strive for the best possible quality.
Some chefs, like J Kenji Lopez Alt have called it and him out several times on it, because it's a very damaging practice, and one that spreads throughout the industry from wannabe Ramsay's that thinks intimidation is needed to make food.
I'm sure Ramsay is a lovely guy in person, but I would hate to work for him.