His ego will be massive if he thinks he was actually able to remove royalty from the country.
I'm sure Piers Morgan's ego is already oversize enough to believe he's the main reason the Sussexes departed Great Britain.

In fact, Piers stated in a 2018 video interview that he believes he sent Meghan on her way to her first date with Prince Harry in 2016. However, it may or may not have been the night of Meghan's first date with Harry, thus Piers' belief is unconfirmed:
Web exclusive: Piers Morgan full interview about Meghan, Harry and the whole family -------------------------------------------------------------------------...
www.youtube.com
Piers struck up a casual professional acquaintance with Meghan via Twitter when Meghan noticed that Piers was interested in
Suits. Meghan only knew of Piers via his talk show in the U.S. She was unaware of Piers' skanky tabloid rep in the U.K. In addition,
Suits' producers continually encouraged their cast to promote the show on social media, etc. That's one of the reasons Meghan initially started her former Instagram account.
It's interesting that in the above video around 3:16, Piers admits Meghan later (after her return to Canada in July 2016) included his name in a Tweet thanking her "London friends" for the time she'd enjoyed with them. So, even if Meghan never contacted Piers again, at least she's kind enough to have had the courtesy to include him in her thanks. Therefore, it's questionable exactly when Meghan might have learned from Harry that Piers could not be trusted. In general, Meghan would surely have pulled back from casual contact with all random media 'friends' once she and Harry committed to pursuing their relationship quietly, under-the-radar.
Piers appears chiefly annoyed that Meghan probably found out he's not worthy of her friendship, and that she cut off all contact with him to the point of his no longer receiving advance videos of
Suits episodes.

He's apparently also extremely annoyed that he came so close to possibly knowing something about the early courtship of M&H, but he's too disreputable and objectionable to be part of their inner circle and invited to their wedding.
So all of this is at the crux of Piers' delusional and obsessive need to hate on Meghan.
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On the lighter side, regarding the Sussexes' recent events in London, it's a fun observation that Meghan wore monochrome red, white and blue outfits, and then the monochrome emerald green at her final public event as a royal yesterday. So much color, when previously Meghan tended toward muting her color palette with a lot of black and navy. The individual red, white and blue outfits are certainly not a coincidence! Seemingly, wearing these colors symbolizes M&H's liberty and her country of origin.
In other news, Kate was unusually captured by paps leaving a bookstore the day after her return from Ireland, wearing a matching bright blue coat and turtleneck top over jeans:
The weekend is the perfect time to pick up some books.
www.elle.com