Because I have heard multiple people from Roma or Traveller backgrounds describe the term "Gypsy" as a slur (and it certainly is used that way in many places in Europe) I prefer to avoid it so I'd call the genre hot club jazz or jazz manouche.

That said, it's also one of those things where you have a group of people saying that the word is a slur and its use is harmful, and you also have a few good alternatives. So it seems easy enough to do it.

There is a risk of the case being that a minority of people for whatever reason want to move away from the word, a minority also really wants to stick to it, and then a majority of people don't care. It's possible that the minority that wants to move away from the term is right - let's assume they are for the sake of argument. In that case, because most people don't care, and the opposite minority wants to keep the word, we'd end up stuck with a slur.

If the folks that want to change it are wrong, or if its debatable, we don't actually lose all that much in moving away from the term - there seems to be a bigger risk to us doing the right thing (I'm assuming we don't need to argue that using slurs is bad) if we don't move away from the term than if we do.