A whole human emotion and they just forgot? Nope, every single smiley is pretend. Every single one is that crying masked wojack. Even the crying smiley is something else.
The wry smile is, ironically, not pretend. Precisely because to be sardonic is to suggest you look deeper, nobody uses this expression to suggest he has nothing behind it when he does. That would just be dumb.
You can't have an honest smiley.
That or ironic humour is so far beyond the happy-happy be-kind-or-I'll-cut-you peasants who make smileys that they genuinely cannot even conceive of it.
Utopianism: every is happy. Or else. There is no reason to be wry.