I should think that by the time JBB became popular, in England at least, traditional dance was well out of fashion, and replaced by quicksteps, waltzes and the like. The Scots and Irish had plenty of tunes, and the welsh were heavily into religion and dancing was wicked. Indeed, given that the Hungarians don't seem short of a tune or two, the oddity is that they took up such a lugubrious tune for a dance.

Perhaps they didn't understand the "mould'ring in his grave" bit.