Leaping up in that context makes me think of a child-like wonder and playfulness which suggests more of a humility before God to me. I know it's very nitpicky of me, but find somewhere that it says a crowd rhythmically leaped with swagger. I would imagine all the leaping and jumping that happened in the Bible would be sporadic and as a result of surprise and extreme joy that leads to the person reverting to a childhood sense of wonder. To be clear this is not a hill that I would die on necessarily, it's just my impression of this type of dance. It's the same leaping you'd see at a heavy metal concert or a gangster rap concert. I don't think that dancing in general is blasphemous or anything, but I just feel there are more fitting things to do to praise Jesus. I'm even a heavy metal fan myself, so maybe this type of leaping I just don't associate with the same Sunday church vibes of praising the lord. I don't think it's morally wrong, I just think it's off-putting.