Other than apparently sounding like he has lung cancer, it was hard to listen to.
Olds engines come with a variety of methods for advance. Some run off ported vacuum, some run of ported OR manifold vacuum, and some have HEI with CCC that needs none of that. And don't forget the mechanical advance. It's usually wiser to include total advance as well. And 4 speed cars usually are set differently than automatics. Some have TVS's that swap your vacuum source when the engine coolant is too warm.
It may work on ONE specific car he might have worked on when he was 14 or so. But it doesn't apply to all Olds engines.
GM assigns tune-up specifications for all their engines. Follow those instructions for your specific engine application and you'll be further ahead than listening to this guy. Sounds like one of those "you might get by listening to this bunk" but if it were as simple as that, GM would put that in their instructions.