I think your objection may be to a narrower definition of happiness than what was used in the article. The article's measure is a global life evaluation that would be the product of the activities that you "DO strive towards".
Oh yeah, my initial objection is/was indeed to the seemingly-more-common definition of happiness that people often use, and then I did see that the author uses a broader scope which I agree with a lot more (insert thumbs-up emoji here) :)
