Once again someone looking for an issue that doesn't exist.
Sorry, I don't understand you being dismissive of this potentially important point
And I feel you are totally and utterly wrong.
I explained before, and others agreed and felt the same, that I have never liked to have a watch tight on my wrist. Even as a child.
I don't means it's stupidly loose, just that it's not tight, so it has some movement on your wrist.
If you can visualise, it's held in such a way that if I lift my arm up, or lower my arm down it will slip up and down a little on my wrist, and you could hold the body of the watch and rotate it a bit around your wrist, but it's not quite loose enough so you could spin it right around.
That's how I always have worn watches.
In the hot weather, especially, for me, it would be horrid to feel something tight, and I like that I can lift/lower/shake my wrist and the body of the watch will move around a bit.
So, I don't agree, I'm just in you words:
"looking for an issue that doesn't exist"
I think it is a 100% valid query to wonder how the Apple watch will work regarding it's monitoring and any skin contact functions with the people who wear their watches on the loose side as I always have done.
No point in dismissing it as unimportant as it may be the difference between it working or not