Oh yes Life, Liberty and the pursuit of Happiness. This article kind of mixes different definitions of happiness. There’s the constitutional reference which comes from ancient greek roman philosophy and its origin is Aristotelian Happiness as “Evdemonia” in Aristotelian scripts (Eudemonia in wikipedia) which more accurately translates as having “good demons” with you, which can be interpreted as feeling content/lucky…
Radiohead has an entire album about how fake and ultimately unfulfilling this is, but the problem is that we live in a society, and nobody wants to be an outlier. I may like the sound quality of my old earphones, but I still feel a tingle of shame when everyone else is sporting AirPods. We are evolved to follow norms, those who don't were ostracised from the community with dire consequences. This kind of fake happiness is thus an advantage.