Amorim made headlines in January when he said his team was "maybe the worst team in the history of Manchester United" following a 3-1 loss to Brighton which came on the back of a poor home record and being closer to relegation than the top four.
Despite appreciating Amorim's frustrations, the statement did not go down well with Eriksen.
"It didn't help at all. I don't think it helped the players at all," Eriksen told the Sunday Times.
"Some things can be said internally, but it is not very wise to say it externally, because it puts extra pressure on the players and puts an extra stamp on the ones who are already trying to do their best.
"It doesn't matter if he was right or not, but for us it was a bit like 'Oh, here we go again, another headline'," said Eriksen.
Eriksen also spoke about how unusual it was that neither the FA Cup triumph against rivals Manchester City in 2024 nor the Carabao Cup title against Newcastle in 2023 lifted the mood in the club.
"The strangest thing is also that at United you don't really celebrate victories like the Carabao Cup or the FA Cup," he said. "It was just a normal day because the club is so big that it only matters with the Premier League or the Champions League.
"You just expect that there will be a lot of focus on celebrating something that we have actually achieved together, but because of the club's history, it's just not good enough. It was strange."
Eriksen played 107 games for Manchester United in all, scoring eight goals and providing 19 assists before his contract expired over the summer.
After several months without a club, he moved to German Wolfsburg on a free transfer in September.