> And I mean that literally. I have never done anything with the account. I created it years ago, but I never got around to posting a photo or anything. It's just an account with no activity.

Maybe you got caught up in a sweep for "coordinated inauthentic activity." IIRC, the groups that do that sometimes stockpile inactive accounts for amplifying things in the future. e.g.

https://www.nytimes.com/interactive/2021/12/13/technology/ch...:

> On Twitter, Mr. Gal-Or’s video was shared by many accounts with suspiciously bare digital personas, according to Darren Linvill, who studies social media disinformation at Clemson University. This, he said, is a characteristic sign of a coordinated operation.

> Of the 534 accounts that tweeted the video from April through the end of June, two-fifths had 10 or fewer followers, Professor Linvill found. One in nine had zero followers. For nine accounts, Mr. Gal-Or’s video was their first tweet.