Agreed. But I shall see your Cavil with "respect", and raise you a Hiddleston with "delayed gratification". =) =)
THIS. I have honestly responded (and continue to do so) with "Dance!" when I've gotten the "Smile!" request from a stranger. When they look befuddled I innocently say "So we're not just ordering strangers on the street to do things for no good reason? My bad." and walk away.