Amorim’s comments have been criticised by some former Premier League players.
Speaking on BBC Radio 5 Live’s Football Daily podcast, former West Ham and Aston Villa midfielder Nigel Reo-Coker says it may put more pressure on the players.
“I could not believe what I was hearing,” he said. “That comment is absolutely crazy.
“I think Amorim is too honest and he needs to be a bit more of a politician. By saying that comment and putting it out into the domain, it puts more pressure on the players.
“How are they going to face him after he’s said all of these things? I hope he has given them a different message in the dressing room.”
Chatting on the Monday Night Club on BBC Radio 5 Live, Premier League winner with Blackburn, Chris Sutton, added: “It is a message to everyone.
“Normally when managers come out and are so strong, that is a last resort and last throw of the dice. Maybe he will regret saying it.”
Meanwhile, former Everton and England defender Phil Jagielka suggested Amorim was attempting to limit his accountability for Manchester United’s predicament.
“I think he is basically saying ‘We are bad, please don’t blame me. These aren’t my players. I am going to play the way I am going to play. I need some players to come and play in a system that I am only going to play’.
“I think he is saying ‘I can’t work my wonders until you give me the players I want’. He is not going to change tactically to what the squad need between now and the end of the season.”
Speaking on Sky Sports, former Tottenham defender Michael Dawson said: “I’m not so sure I’d be very happy if my manager came out and said I was part of the worst Manchester United team in history.
“I understand what he’s trying to do but this is becoming embarrassing.”
Ex-Everton midfielder Leon Osman can understand the intent, even if he would not have enjoyed hearing it as a player.
“It’s a really bold statement to say they are the worst ever,” he said.
“I personally wouldn’t enjoy being called out like this. It would probably fire me up – which is probably the intent – but no-one wants to be known as the worst team ever. It’s probably an honest – and right on the mark – statement.”
Meanwhile, on Sky’s Monday Night Football, ex-Liverpool defender Jamie Carragher added: “I’ve got no time for this Manchester United team. I don’t feel the players or their confidence – half of them are a joke anyway.
“But I’d be very surprised if the powers that be above him [Amorim] won’t be having a very strong word. You don’t speak like that as a Manchester United manager. When you’re in a very poor situation, you don’t pour petrol on the flames.”