It certainly has the feel of a waltz. It's not that hard to make a 6/8 time signature not sound like a waltz (as you say, just hide the second down beat, or mov

It certainly has the feel of a waltz. It's not that hard to make a 6/8 time signature not sound like a waltz (as you say, just hide the second down beat, or move it). But it's very very easy to waltz to the song. Whether it makes more sense to musicians write it 6/8 or not, I have no idea, but it's still a waltz.