It [bookdown] makes you want to write things just to use it.
I was flattered. That was exactly one of my motivations of developing the bookdown package. As I mentioned in the Acknowledgments section in bookdown book, I loved the beautiful Gitbook style, which motivated me to write an R package based on it.
Mareviv’s tweet is actually the opposite of the story “Buy the Case and Return the Pearl” and also how I hoped bookdown would work: I hope users feel good about the book style first (“buy the (empty) case”), and then start writing a book (produce the “pearl”).
I’m looking forward to more pearls in the future.