It sounds like a good system but i still believe it takes the discipline of a strong willed person to do the system no matter what system you use.
If i did this i would give up after 2 days. He says he redoes his list every night ready for the next day —- THAT is the secret here, not the specific system he uses.
I’ve tried all sorts over the years different tools, different systems , different philosophies, inbox zero, gtd etc They don’t work for me. I get by with a notepad and pen and i write lists as and when. Theres people out there and some even have YouTube channeks dedicatd to disseminating their productivity hack and workflows for evey tool Imaginable, and they are really enthusiastic about it.
It doesn’t do it for me im too free spirited.