Even if the Shuffle *was* a modification of Riverdance, what's wrong with that? Riverdance is fucking ill.
I much prefer the shuffle, for obvious reasons, but I like the freedom with it (u can move ur hands more), it's done to electronic music, and the illusion it gives off is just plain dope.
There's a funk style called Floating, this mixed with a shuffle goes off, imo. The illusion makes u look like ur floating across the floor. You use your arms to distract people, and they don't notice ur feet floating, it's magic %)
Floating is very close to Gliding. Everyone knows what gliding is, MJ's "moonwalk" is actually called a backglide.
Oh, and "dancing is not about style?" That's just silly. Even when people Bot (i.e. dance like a robot), their own personal style shines through. Style does not always mean a specific way of moving your body to the music (e.g. ballet, swing, bboyin'), style is your personal character shining through when you move. Everyone has this, and repressing it just makes your dancing look stale. Not to mention you lose the feeling of letting urself truly go, the reason u should be doing it in the first place.