Not me, most smiles are phoney. Americans think when they travel abroad that foreigners are always upset because they don't do the 'fake smile' thing.
One of the quotes in the article was, I think, from Iceland — someone said, “When I see someone smiling I think that they are either mentally ill or American.”
Fake smiling is a woman showing her teeth. Many women now walk around showing their teeth in the perpetual primate gesture of non aggression or capitulation.
The Dental industry has capitalized by selling your smile. The epidemic of teeth whitening is to enable the vain to walk around in a state of continuous capitulation. Capitulation is stylish