A better explanation of why formal shoes are a certain way has more to do with tradition and appearance than dancing; saying shoes should be smooth and elegant for dancing because people should be dancing smoothly and elegantly is a rather circular argument. Besides, not everyone dances.

If it really was all about dancing, people would be wearing something tailor made to the style of music and dance, which in some cases might be something more athletic than formal. Sorry wildrover, but several of the styles you listed are anything but smooth and elegant. And if one has that much trouble moving around or avoiding their partners feet because of dress shoes with a bit more cushion and grip, then they probably need exercise and dance lessons.

I don't buy the proposition that one can't dance properly in a chunkier shoe. I've done it and I've observed plenty of people doing the same. It does make perfect sense, however, that THCD has a well established look and that a lighter, more refined shoe is the correct choice for black tie formal attire.