Who cares if they do? They're only hurting themselves and many others may find it useful.
It's like going 65mph in the fast lane, when the person behind you wants to do 80mph. "They shouldn't be going that fast," but they are and they're going to. Best not worry about it yourself, and let them get pulled over and learn the lesson on their own.
I personally agree with the sentiments of the OP. I am often shocked at some responses, and threads closed marked as "non-constructive." It seems counter-intuitive for learning and sharing knowledge (to me).