That is the same line they use about
DVC in general--they don't have to use high-pressure tactics because "Disney sells itself." And to some extent, that is certainly true. Perhaps the same for the GF, I realize there are a lot of enthusiastic fans of the resort.
But never is a long ways off, and a lot can happen between now and then. I would be surprised if there is sufficient demand to never discount the GFV, but you just never know. Personally, I wouldn't bet on that. If it is the case, I think it would be more attributable to the fact that it is a relatively small resort (is it the smallest, in terms of number of villas?), so it simply takes fewer sales to sell out. I don't think it "sells itself" much more than most of the other DVC resorts when they are new. Each one has unique attributes that make it attractive to a lot of people. We shall see...