I'm not a huge fan of NVC, but let's be honest, how many "unsuspecting users" really exist? Do people buy a coin just because they see it on an exchange, without doing any research first?
They are not "unsuspecting", but really greedy speculators. There are tons of people investing in HYIP schemes, knowing they are HYIP. Also tons of people here play blatant pyramid based games. They are just betting on they will not be the last to hold the bag.