Totally irrelevant on the subject, but the screen recording in the article caught my attention: what tool does one use to create the screen recording with zoom and mouse tracking?
The most popular one is Screen Studio[0], but there are a few alternatives there, like Tella[1].
Screen Studio is fantastic and unlike a lot of other commercial screen recorders has a one-time purchase cost (though you can also pay monthly).
Since I use Windows and Screen Studio is Mac only, I tried Tella and can definitely vouch for it. (I am on their free trial though)