Yes. Regardless of what you intended, IMHO, it comes off as a money grab, and the fact that it glows and "Get the book" is in that high contrast purple doesn't make it better. Maybe it's just me, but I would suggest making it less conspicuous.
edit: and the book image causes a content layout shift when it loads
I think I'll probably keep it front and center for now, given that the book will be launched out of beta in the near future, but I can see how it might give the wrong idea, and will reconsider its placement going forward
About books: I had a horrible experience in the past with Trailblazer, the Ruby library.
The documentation was horrible, and only had extremely basic examples. The recommendation to any question I saw online was always to buy the book for almost anything. The goal of the bad docs was clearly to encourage people to buy the book. That rubbed me off and it felt like a cash grab.
And of course I'd buy a book and donate for a library I'd want to support, but for Trailblazer's case it's the opposite, I never voluntarily chose to use it and actually would like it to die.