I agree, if I have the money I'd have totally gone for it. So many sliders in photography apps, and I can't count how many times I have to turn the volume slider at the top manually. Touch ID is a bonus.
Pro tip: use keyboard shortcuts for photography apps. Unless you really really need to look down on your keyboard all the time.
How is it more efficient turning the volume slider manually on the Touch Bar? What's more, it takes an additional tap to prompt the volume meter. Unless you have the classic key layout enabled. Oh, here's another bonus: the skip/back music buttons do not even show up on when waking the screen or on screensaver.
After spending some time with my 2015 MBP I didn't even notice TouchID wasn't there.
To each their own, sure, but to me the whole thing is total garbage.