Doesn't this mean that you are currently simply in the sweet spot where the language is usable but also not bloated yet? As in, it could all change in a decade and therefore isn't an intrinsic quality of the language itself, but merely the passage of time.
I recall this blog post exploring the possible correlation between the age of any programming language and the developers' disposition towards it: https://earthly.dev/blog/brown-green-language/
They put crazy amounts of thought and effort into how they evolve it.
Their entire strategy as far as I know was to intentionally aim for “boring and predictable” so that no matter how large or complicated your application got that you would never outgrow it.
Then they built a bunch of really nice tooling and DX on top of it.
It’s genuinely a pleasure to work with in my experience.
Most major publishers pay quite small royalty rates, so even a popular tech book won't actually make the author much money. And the effort to write a good technical book is pretty huge. Also, the set of people who will actually finish writing a book is quite a bit smaller than the set of people who aspire to. (An editor at O'Reilly told me once that only about 1/3 of the authors they sign deals with actually end up finishing the book.)
So for a book to appear, you need to find someone who:
1. Knows this particular topic in depth.
2. Is interested in spending a lot of time writing a book about it.
3. For relatively little money in return.
4. And actually has the discipline to finish it.
Not a lot of people in that set. It's also particularly hard for technologies that are in flux since the quicker the book gets out of date, the less value there is in writing it.
There's also a weird difference in incentive between writing the first edition and working on updates: if the author was just after "I wrote a book!" then they already have that, and won't be so interested in updating.
If they were made famous and now have a lot of work as a result of the first book, they may not have time for it. It's quite the delicate dance to get someone else to update the book: without the update, sales will drop, but 1st edition authors feel weird giving a lot of their (not sizable) royalties to someone who didn't write most of the text.
I blogged for a few years (and wrote thousands and thousands of comments on Reddit, which was also helpful) before I wrote a book.