You have to laugh at the "Amorim is the man to turn united around" shit in the media. Ten Hag came from a second tier league where he'd been successful, but couldn't hack it in the world's top league. He actually made them worse.
Amorim may have done well in Portugal, but the Portuguese league is just below the Eredivisie in the UEFA rankings. There's three teams who dominate it and if you manage one of those, your chance of success is that much higher. Let's hope he's as successful as Poundland Pep (of blessed memory).