Hello, author here :)

There are 4 applications the readers of this book are going to build along the way. I think that's more pragmatic than other programming books.

Most, not all, of the other mentioned topics are too niche to address them in a beginners GraphQL book that should be read by a broader audience IMO. But I keep these topics in a list to write supplementary blog posts about them.

Thanks for your insights on this! Helps a lot to identify the pain points the community has on this topic :)