I mostly interpret this as ‘see me see me - I’m good!’ in stead of ‘let me try to educate you about this subject’.
All the natural pauses between sentences gives a much better and natural flow.
This also includes ‘oups I made a mistake .. and fixed it like this…’
Just like the line breaks in this comment serves a purpose;-)
One great example of a really good tutorial is Eivind Fonn’s Spacemacs ABC videos: https://youtu.be/2y9NLIbNf_I
Here’s my worst example of how not to teach: https://youtu.be/qtIqKaDlqXo
This series is also bad as there is way too much zoom in and out (which distract all but the presenter!)
A bunch of non-breaking quick cuts is of course jarring and could be better, but what you describe with "mistakes and all" is too far down the other end in my mind. I would not want to sit through someone having to backpedal like that.
But to each their own, we all learn differently.
It's for videos you make yourself, to remove silent parts automatically. In interviews for example, it's useful to simply remove silences.