Ok. Everyone is stating an opionion and expecting everyone else to take it as fact.
Let me give you two quotes.
The first one, you will recognize. Google the second one.
ecigarettes will normalize smoking again
Our youth now love luxury. They have bad manners, contempt for authority; they show disrespect for their elders and love chatter in place of exercise; they no longer rise when elders enter the room; they contradict their parents, chatter before company; gobble up their food and tyrannize their teachers.
Saying that rude people gives "us" a bad name is just like the first quote.
Expecting good manners from anyone under the age of 1,000 years of age 100% of the time is like saying you were never rude.
I honestly do not think that a few young vapers being young will cause the world to end.
Was the youth the OP was talking about a rude little .....? Yes
Will I be judged a bad person by society because he and I both vape? No
Is it a good thing to point out to someone that they are being rude? Yes
Can you expect anyone under 1,000 years of age to politely say "oh, gee you are right mister, and I am wrong."? No
But you can probably expect that same young person to one day go up to some young person and try to correct bad behavior.
And that is how young people learn to be good people. By someone older pointing out the bad, and praising the good.
Next time congratulate the young person for not smoking at his/her age,
THEN point out that the checkout line may not be the best place to exercise his/her right to vape.