Hamann was unimpressed with a brilliant piece of skill performed by Ronaldo in the first half of the game, insisting such theatrics is used to belittle the opponent.
The Juventus superstar gave Portugal the lead in the opening 15 minutes of the game and decided to pull off a superb bit of skill by lifting the ball over Rudiger before finding Manchester United midfielder Bruno Fernandes with a simple back heel flick.
“I think it’s nonsense,” Hamann told RTE Sport.
“He flicks the ball over, pretends he is going to catch it and back heels it across, and looks away… of course it is [amazing] and we know he can do that… I think, in a way he’s belittling the opposition.
“This is at 1-0 and I’m sitting here while you all rave about it. Yes, he is the best, with [Lionel] Messi… He looks a fool now. This is 1-0. He does look the fool.
“If you ask the German players, they’ll tell you now what they thought of it. They would have noticed that.
“I tell you now, all of them will say it may have given us an extra bit of whatever to change things.
“What is he trying to achieve? Maybe this [Germany comeback] is where it all started.”
Portugal eventually lost 4-2 courtesy of two first half own goals from Ruben Dias and Raphael Guerreiro and second half strikes from Kai Havertz and Robin Gosens.