If you look at the press headlines on the day, you will see people being told it's him. I think you will find the verified mark is actually ascribed to the person being real in most cases - the main selling point of Twitter. I've been using Twitter since late '06 - people's general expectation was to be closer to a celebrity not a corporate portal. The biggest 'celebs' are renowned for tweeting themselves - millions of examples are not required. The media played on that idea well:
"Morrissey joins Twitter and shares typically droll first tweets!"
"Former Smiths frontman joins Twitter."
"Morrissey is now on Twitter and his first tweet is perfect."
"Here is Morrissey's first tweet."
"It looks like Morrissey finally got himself a Twitter account."
"Congratulations Morrissey on having a Twitter." (ironically Stereogum's).
"Morrissey joins Twitter - what can we expect?"
"Morrissey joins Twitter - can his suffering fit in to 140 characters?"
"So Morrissey has a Twitter account."
"
The More You Retweet Me, The Closer I Get: Morrissey has joined Twitter."
"Rejoice, Morrissey has joined Twitter."
"Revisiting celebrities' awkward first tweets, in honor of Morrissey's twitter debut."
"Morrissey joins Twitter and tells the world he 'spent the day in bed.' "
"Wait, is Morrissey on Twitter?"
"Morrissey tweets for the first time and it was peak Morrissey."
"Morrissey just joined Twitter and wrote his first two tweets."
"What kind of celebrity tweeter will Morrissey be?"
"Morrissey posts first official message on Twitter."
All the above plus a blue tick = Joe public thinking it's him. Exactly what happened with the World Peace "Planet Earth, are you there? One can only hope..." tweet without even being verified.
Strangely, a day after the post here about the change to the profile information...
The 'non-story' becomes a story:
Stereogum:
Morrissey Twitter Makes It Official: “Not Moz.”
https://www.stereogum.com/1963949/morrissey-twitter-makes-it-official-not-moz/news/
Spin:
Thank God, Morrissey Is Not Running His Own Twitter.
https://www.spin.com/2017/09/twitter-is-not-real-morrissey/
Anyway, I've said my bit.
Regards,
FWD.