I do exactly the same, I often do a couple of swirls and then slap lather on my face and leave it to sit while mixing the lather in the bowl.
When I watched that video I thought....
No way....way too much water
He will never make decent soap out of that
OK well if you whip it for 5 minutes then maybe
Shit he made it to shave quality, glad I didn't bet on that
For me the learning point with at video is that even the sloppiest crap can be rescued. When I was trying the Fitjar cream I dropped the brush in the sink and thinking it was unrecoverable I started again. I don't expect there to be a next time but at least I know now, I have always erred on the side of dry and add more water as I go but that video is a good demonstration of how you can come at it from the other side (ver sloppy to good mix). My fear was always adding too much water would completely screw the mix but it seems even what I thought was unrecoverable is not.
I am sure he doesn't do that every day, or at least I hope so. If I had to do that every day I would invest in a mechanical food mixer.