I've used several of his methods that would seem unusual to most car detailers. Mothers on the headlights, on the paint; "orange shop soap" on the windshield; rain-x in the power window tracks; heat gun on plastic trim; 303 on tires, plastic trim, windshield wipers - and every single one has worked as shown. In the case of using Mothers mag and alum polish on my paint, it actually did not do as well as Megs ultimate compound but it did a fair job - no damage of any kind.
There are quite a few comments in various threads related to the detailing industry over-pricing products, over-hyping capabilities and generally making a boat-load of cash off us by "updating" products. This youtube channel has been a welcome addition to my detailing knowledge and I'm always willing to try something new...especially when I have the products on hand, don't have to order or over pay for them.
YMMV.....