Your comment does not explain why you doubt that the book will be educational. So anyone that doesn't see a reason still won't see a reason.

  She's certainly very good at marketing

You're certainly very good at suggesting your criticism should be taken seriously, because you preceded it with praise.

I'd say it's up to her to build her case, not me. There aren't any sample pages, and what I saw focused more on story than programming concepts. They're not mutually exclusive, but her video seemed to me basically an emotional puff piece, a bit short on concrete details.

You're certainly very good at suggesting your criticism should be taken seriously, because you preceded it with praise.

I think you're over-thinking it.

Did you mean that as a backhanded compliment?

Insecure troll?