I should have written that shaming is not the best way to help people you're truly concerned about. In fact, it often does the opposite.

Genuine concern for people is one thing. Shaming and humiliating people in public is generally not the best way to get them on your side.

Exactly – so gracious and kind of Fit Mom to "concern" herself with strangers health. I'm sure she really, really cares because she does it in such a constructive way!

YES. The concept is so easy but surprisingly hard for many to grasp.