You know this is advertising. While you watch this video about how the gold Apple watch is made, you know the company wants to sell you something, but you don't care.
Apple starts it's marketing and advertising like nobody else does, buy making the finest possible product bar none. The marketing then comes easy, all you have to do (if you're Apple) is explain yourself. You don't have to emelsh the truth or exagerate. If you're Apple, all you need to do I get you head designer Sir Jonathan Ive how it was done. The rest is pure art.
Here is how the Apple Gold watch (Apple watch edition) is made: