The Good Morning Britain presenter said the grime artist should “wield [his] power more carefully” after he answered a question from a Year 3 pupil at his old school about what he thought of the prime minister.
“He shouldn’t have done this, and shouldn’t have been allowed to do this,” Morgan said on Twitter.
“The kid asked me a question and I replied truthfully,” the rapper replied. “Nothing wrong with that Piers lol.”
The artist had compared the prime minister to “the big bad wolf”. He said: “He is gonna come down and blow your house down – that’s why we don’t like Boris.”
“Saying stuff like that to a bunch of very young schoolkids isn’t cool,” Morgan said. “You’re a hugely influential role model now to so many youngsters, wield that power more carefully.”
Stormzy replied: “It isn’t cool, it’s the truth.”
He said: “I gave em my opinion, they’ll grow up and be able to make their own, this ain’t a shocking incident pal.”
It is not the first time the rapper has expressed strong opinions towards the prime minister.
His No 1 single “Vossi Bop”, released earlier this year, includes the lyrics “f*** the government and f*** Boris yeah”.
He also endorsed Labour’s Jeremy Corbyn during the general election, saying ”for the first time in my 26 years of life, there is a man who man trusts”.
He said: “I wouldn’t use my platform and my voice to say that to you guys if I did not wholeheartedly stand by that.”
Morgan criticised Stormzy, who released his second album Heavy Is the Head last week, for remarks made during a Noisey video which saw him answer questions from children at his old school in south London.
He told his Twitter followers he was “not defending Boris” but rather “defending young kids who shouldn’t be exposed to that kind of hyper-partisan political rhetoric in their classrooms, and especially not by a guy they all look up to”.
Morgan claimed he was still a “big fan” of Stormzy and hailed the rapper as a “hugely important new cultural voice”.
According to voter registration figures from GOV.UK, there was a huge spike in visitors to the site around the time of Stormzy’s tweet urging his followers to vote in the December elections.