First page of first chapter of Glow Day has three "em dash".. how much of this has been written by AI? Checking the pages after, there's at least a few occurren

First page of first chapter of Glow Day has three "em dash".. how much of this has been written by AI? Checking the pages after, there's at least a few occurrences per page. Even the author bio has been written by AI: "His writing blends adventure, emotion, and humor—from the sci-fi world of Glow, to the quirky nature of Benny's Blunders." How did you manage to publish Paperback books? How did you work with? Maybe some behind the scenes? Otherwise this seems like any other AI slop attempt to make up a credible backstory to sell a product.