I said that. This is due to my OCD, and isn't anything W9 has explicitly stated you need to do. I'm going off of anecdotal experiences where I've had a slight bit of "vapor" burn off of brand new carts.
Now keep in mind, I'm not saying that this is a danger or that you'll get cancer or something. In fact I do it for better flavor more than anything else (again, I'm assuming this would effect flavor, I have no data to back this up other than personal experience with other carts).
Whats the downside here? You dont need to heat the coils up to red hot, and you only need to do this once or twice before loading for the first time. I cant see this negatively effecting cart life... at least not in my own experience. Remember, Ive had 4 different KISS carts and I've never had one burn out on me.
Also W9 stuff is made in China. Now before you give me that look, this doesnt mean anything. Some peopme seem to think that Apple products are some magical gift that fell out of God's ass. Those, too, are made in China. The point here is that while W9 uses Chinese factories to make their parts, they make sure the quality of the parts and materials is there instead of just buying the cheapest Chinese made shit they can find like other companies.