Most of those keyboard shortcuts are worth learning; there are more, though, and the article leaves out why they are the way they are and that they're available anywhere GNU readline is used.

Here's a more detailed article I wrote about them a while back:

https://www.masteringemacs.org/article/keyboard-shortcuts-ev...

For instance, did you know that you can record keyboard macros and play them back? It's a GNU readline feature.