I have seen absolutely nothing of the sort. My experience is that other than a larger screen and an extra button, the Ultra is just like the normal Apple watch

I have seen absolutely nothing of the sort. My experience is that other than a larger screen and an extra button, the Ultra is just like the normal Apple watch which preceded it: reliable to an almost boring degree. To the point where I want to include some sort of caveat or flaw in my reply, lest I be accused of the dreaded fanboyism. Problem with that is that I don't have one. I can't think of a single bug or glitch in the 18 months I've had it. I guess I have one kvetch: there was a major OS version bump during which they disabled swiping between faces. They added it back as an option, which I promptly turned on, and that was that.