I generally agree with one exception: for UI heavy tools, screencasts are much better than docs. Rather than reading docs and trying to match content to the UI, it's faster for someone to just show me how it's done. I had to learn C# on Visual Studio a few years ago, and watching Pluralsight videos got me up to speed in 2 weeks vs. me struggling through the (rather dense) Microsoft docs and O'Reilly books. (this is partly due to the fact that Visual Studio is just that -- visual. A huge percentage of tasks are accomplished via mouse clicks.)
Even for something like Azure Devops I managed to learn much more quickly through YouTube than by reading the docs.
It's a akin to the difference between a book and a painting or a piece of music. A book -- or more generally the written word -- is really good until it isn't. Sometimes knowledge just flows more easily through other media.