I haven't watched that video yet but I wanted to mention I ended up buying the 14" M1 Pro 16GB RAM with 16 core GPU, mainly because it was the only one in stock locally.
I intend to use an external monitor so the 14" I thought would be more portable when I'm not in the studio. I had it delivered on Nov. 1, the same day Apple extended their return policy to January, so if it isn't big enough or powerful enough I have time to upgrade. It'll take me a few weeks to know how it performs. Lots of files to transfer over.
I just wanted to mention that if you start out with M1 Pro 2TB 16GB RAM and you decide to upgrade to 32GB of RAM ($400 extra) if It was me I'd add another $200 to get the 24 core GPU and automatically be bumped to the M1 Max, with double the memory bandwidth and all the other video benefits. I think Apple is charging too much for RAM upgrades, but once you hit 32GB with an M1 Pro that extra $200 bump to an M1 Max 24 core GPU is an xlnt value for the money. In my case I'm hoping the 16GB 1TB does the job, however.