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 for what you have.
Happiness as “Joyfulness” which is smily face marketing and instant gratification and hedonistic stuff aka buying the new iphone each year and getting bored at it and buying afterwards the next one because under a microscope the photo of the dark side of the moon looks better, when somebody else takes it.
So if one needs to repeat escalate: hedonism usually exploited by marketing, if you need to pay probably a facade of happiness and unfulfilling. Hedonism is nice to have tho.
If one is feeling lucky for his life and future: happiness aka lucky for parameters of ones life that would be deemed important 300 years ago and should be important in 300 years, conative with a sense of purpose. usually exploited by social and political systems (e.g.to be happy you need good health, very expensive if politics fights life) happiness is a must have
This article conflates one definition of happiness to the other while only discussing affective optimisation of hedonism.