And that's because a lot of devs think it's perfectly dandy to just put perfunctory docstrings in their methods, point it at whatever "doc generation" tool, wire it up to a github.io domain and call it a day.
There is a reason people crave, want and seek things like SO and blog-posts. They're packed full of insight, working examples and just plain old "how TF do you use this thing". Oh and of course, the "this problem A didn't work when using setup B and C, and that's because of reasons X,Y,Z. Here, try H,I & K and it'll work.
This goes doubly so for google cloud documentation. Firebase docs are decent, but if you're a developer who's gotten used to google's documentation style I could see skipping right over it.
Multiple years of sample code and examples just cut out from the middle of pages.
When I was building on firebase it took me a long time to reconstruct exactly how certain aspects of the system were supposed to work just because of those missing docs.
I find it to be very discoverable if you are looking for docs about a specific function or module.