^^^^^^Am very ambivalent.
In real life, I am painfully quiet and introverted. I suspect I would nod politely and pass by the badges.
How can I condemn that behavior in others?
On the other hand, I see the personality trait in myself as highly aberrant behavior; I dearly would like to believe mine is the exception, rather than the rule. And recognizing that it is not desirable behavior, I would do my best to find the courage to take one of the badges, participate in the exercise / contribute data to, and observe a fascinating psych experiment unfold.
I might even slip the guy 10$; He's to be lauded for going out of pocket to try and make other people's day a little better. It's just that easy.
P.S.
No chance I don't brazenly steal the term "friendly introvert" for future use.