Yep, strongly agree with this take. All of the yelling and aggression is an act for US television if you watch other programs he's been in.

Another thing based on UK Kitchen Nightmares is you really only see the hostile side come out when he's put into a situation where the other person is hostile. If the person genuinely wants to learn and try to save their business, he's nothing but helpful. There are episodes of the UK show where they're basically just wholesome all around.