The Duchess is said to have been concerned about how the former GMB host's comments would affect others struggling.
ITV has confirmed the presenter will no longer host its flagship breakfast show.
"Good Morning Britain" presenter Alex Beresford slammed Morgan's "absolutely diabolical behaviour" as Morgan walked off the set of his own show.
The Good Morning Britain host has accused the couple of hypocrisy.
He and Susanna Reid outlined the government's failings in the pandemic during Wednesday's Good Morning Britain.
The 91-year-old won himself even more fans during an appearance on British breakfast television.
Brace yourself. This is probably the most awkward thing you'll see all day.
Susanna Reid's face said it all.
The Good Morning Britain presenter has repeatedly spoken in support of the US president.
There are a lot of frayed nerves out there.
"This feels different. Very different," the Good Morning Britain presenter said.
Piers laid into the Duchess of Sussex after she spoke out about the importance of voting.
The couple have since returned home after France was added to the UK's quarantine list.
The You’re Beautiful singer put in a typically self-deprecating appearance on Monday’s Good Morning Britain.
"I've got a bunch of views but it's early, if I'm honest," the musician explained.
"You sound completely barking mad," the "Good Morning Britain" host told Donald Trump's personal attorney. Then it got personal.
The Good Morning Britain presenter has been a fierce critic of the Duchess Of Sussex.
Chris Evans, Alyssa Milano and Mark Hamill joined conservatives, lawmakers and others in calling out the US president's coronavirus comments.
The Good Morning Britain host riled viewers when he attempted to imitate the Chinese language live on air.
The divisive breakfast TV presenter has been accused of "racism" after doing an impression of a Chinese advert.