Who said anything about ignoring those who haven't played D&D? You seem to be assuming anyone who hasn't played D&D would automatically dislike traditional/pre-4e D&D... yet there's no evidence that these two things correlate. In fact, having an experienced base to promote games and teach new players is probably a bonus.
I had the opposite reaction when I bought my son, 3 nephews and niece each their own Pathfinder Beginner Box and ran the included adventure... they loved it. In other words, your experiences aren't universal, or even enough to draw a conclusion from.