Definitely do something about it. There's thousands of people taking that course (i'll leave out the business name) on writing ebooks. The ad starts off "i'm no author but....." I believe one of the tactics is to use AI to generate the content or ghostwriters. It could be that it's been regenerated by AI or the ghostwriter has used AI . Or someone's literally copy/pasted chunks of your work. I'm not sure which of the above is worse!

Good luck!