Pretty good video. However, it doesn't align with my recording experiences.
I started recording in the late 1980s, the cusp between analog and digital recording. I would edit 1/4" tape of spoken word recordings for KPFA. Those sorts of tapes don't have much to do with what the guy in the video is talking about - the first assignment was to remove "ums" and otherwise undesired mouth sounds from a lecture/demonstration/interview. So that involved rocking the reels, cutting the tape on the editing block and taping the results back together. I also recorded LPs and CDs to reel to reel, left gaps of suitable length, physically edit where necessary and then copy to a digital format on a Beta tape (this is really early digital) for "Music from the Hearts of Space" programs. It was a completely different workflow than the guy in the video is talking about.
My very first recording of music was a demo tape of Renaissance music. I was using a 1/2 track, 1/4" tape at 15 ips. No punch-ins or anything of the sort. Got a DAT recorder soon thereafter. The sound was clearly better, and the recorder was a lot lighter, making it much easier to haul around. A couple of years after that I got a Sound Designer II two-channel digital editor, and I was off and running. Most of what I was recording were concerts - editing consisted, for the most part, of shortening the gaps between movements of pieces of music. Around this time, I also got some work editing recordings that would end up being CDs. Not recorded in anything like a studio (churches for the most part) but requiring close editing. I suppose these edits were something like "punch-ins", sometimes very close edits, like the edits for piano or harpsichord music. But the "workflow" for these recordings involved (usually) making multiple recordings of whole movements followed by recording short passages that weren't properly covered in the previous takes. That's what a producer is there for - to mark down in the score passages that require those sorts of edits.
From what I've read (and observed) elsewhere, this is the technique used for most classical recordings. It all happens in real time so there's no juggling of multiple tracks. And because this technique of digital recording is ideal for classical music the information in the video, for the most part, doesn't apply to recording classical music. The only problem with all of this is that it makes it too easy to make a good sounding recording of classical music, so that there is the potential of a glut of recordings. Which is how things turned out anyway.