Piers and his co-star Susanna Reid were chatting to royal butler Paul Burrell about the fourth series of the popular royal drama.
Following the life of and reign of Queen Elizabeth II, the series depicts the relationship of Prince Charles and Princess Diana.
Piers blasted Prince Harry over his deal with Netflix, as he branded it "hypocrisy" after his battle with the media for privacy.
Morgan ranted: "He's just signed a humungous deal with Netflix who are putting out The Crown."
Piers said: "Is there not a shocking hypocrisy here? This is a bloke around every minute of the day screaming about privacy for his family, and yet here you have the most intrusive TV drama every made about the royals, spilling all the gory details about his parents and their marriage and so on.
"And there's Harry taking the money from the hand that is doing all this stuff."
Royal commentator Angela also joined Piers and Susanna, and she said The Crown was "deliberate attack on Queen".
Angela confirmed she did't approve of Meghan and Harry’s Netflix deal, as she said: "Well, I think he has made a terrible error."
She continued: "I think the way that he has left the royal family, the way he did it, and he’s changed.
"He's almost unrecognisable from the Prince Harry I spent a lot of time with.
"But I think, you know, Meghan is desperate to earn lots of money and Netflix offered them something.
Piers also hit out at Prince Harry for his relationship with Netflix in his article for Mail Online.
Morgan admitted he found the new series "gripping" and added: "To say I wasn't disappointed is the understatement of the millennium."
He continued: "If I were Charles, or William, or the Queen, or Prince Philip, I’d be as disgusted by it all as we’re told they are."
He accused Prince Harry of involved in a company which was "trading off" the Royal Family in a "lurid, sensationalised, hurtful and fact-devoid way".
"Shame on him", the GMB presenter added.
Good Morning Britain airs weekdays at 6am on ITV.