I'm kind of now wondering if the person who told me this knew what she was talking about. It didn't make sense to me at the time, particularly since the Windmill is definitely adjustable.

Also, the highly popular Jet Boil stove (as well as many other brands of stoves) uses piezo electric ignition. If these piezo ignitions weren't reliable at altitude, why in the world would anyone put them is stoves used by backpackers, climbers, and mountaineers?

I guess, as they say, that the proof of the pudding is in the eating. Next time I'm up above 8,000' or better still 10,000', I'm going to have to fire my Windmill up and see how she does.