I believe you've said it very well.
Tattoos have been around for centuries. A very rich history of artistic expression. With modern inks, open minded youths and a resurgence of tattoos as socially acceptable expression, Apples ignorance is stifling.
WATCH has been around for a couple of weeks.
Socially accepted norms of people with sleeves of tattoos has been around for a handful of years.
So the next thing is testing and working around tattooed users. Tattooed people are not some protected class of people. I think the rage is a little overblown.
It's too bad they didn't test WATCH on their Apple Store employees. Man, I remember when it was just nerds in there, not cool kids. Ah, the good ol' days.