There's two kinds of dancers, those who understand what they are doing and how they learned it, and those who can just do it without knowing why. The kind who can just do may well look down on everyone who can't, because they don't understand that learning is a process that results from effort applied under skilled guidance.
The kind that understand what we do and how we learned it tend to look down on those who are too unfocused to make a real effort to learn. When we're in a more generous mood we rememeber that not everyone really cares as much about quality and so we respect the unschooled social dancers for finding a simpler way to have fun. And when we're feeling insightfull, we recognize that the the problem with the less succesfull students is not always lack of effort, but often just as much lack of effective guidance... we look at someone the natural dancers would call hopeless, and figure they could be good if they really wanted to and found a better teacher.