It's the best surely, and that article is decent, but there are so many areas wherein information is lacking or incomplete. One-line examples for entire modules or lack of explanation for specific parameters etc..

It's amazing that Google and Apple rely so much on browser use but they can't publish comprehensive information on them.

I agree, excellent explanation of all things web. One recent example that stands out, their Django tutorial puts the official Django tutorial to shame imo

Absolutely. And many of their docs can be imported to Dash.app. :-)