This is an impressive amount of customizable power! As stated in the article, some IDEs can do some of that by default. For example, CTRL+ALT+arrow down exten

This is an impressive amount of customizable power! As stated in the article, some IDEs can do some of that by default. For example, CTRL+ALT+arrow down extends cursor so you get multi cursor in VSCode. Selecting a word in VSCode and pressing CTRL+d starts selecting more of the same word. Then you can press left arrow to place cursors at the start of every selected word. It's impressive how emacs exposes a neat API to do that and more!