I believe they're thinking of https://www.nytimes.com/2016/01/17/magazine/the-happiness-co...

This was indeed it! Much more interesting read IMO. I remember being struck in it, though, by the reference to Eliezer Yudkowsky as being known for espousing polyamory, As if to tell readers, watch out, sexually deviant person here! A lot of articles about rationalists seem designed to reinforce Scott’s broader point about the distance between the blue and grey tribes

Thank you!