They are terrible dancers. I think Zayn might have some rhythm when he bothers to try and isn't being self-conscious, Liam always looked corny but had some moves. Niall is probably at the better end of the five but the bar isn't exactly high so I'm not sure that's much of a compliment and Louis is, well, Louis. The best thing I can say about Harry's dancing is at least he commits and is enthusiastic and I'll leave it at that.
He does commit, always and still. Zayn needed to get out of his own head, but I agree that there seemed to be a sense of rhythm there, somewhere. Agree pretty much entirely with your objective assessment lol. It still manages to be so bad it’s good.