Some of his videos are result of testing things for a couple of years, like headlight restorers.

Also, some of the things he shows are pretty through. If it was a wall-of-text sans videos or images, it'd not have this kind of details and information.

Because as everyone and their horse say, while he has a ranking and weighing, you can decide what to buy (if you need it) through the video by seeing how it's applied/works/fails/excels. This is hard to convey with text only.