I feel comfortable equating problem solving with optimization, for while we are still living outside of a utopia, any beneficial system that less than perfectly efficient is causing suffering (from an opportunity cost perspective).

Similarly, I feel comfortable treating a drive towards improvement the same I do a drive towards perfection, since without an end goal (perfection), you can't have improvement, since you cannot say if what you're doing is bringing you closer or farther from 'good'.

I do agree with you though that an individual can focus on hyper optimizing their personal life to the point where it is not good from a societal perspective; however, that's is not what I gathered the article was arguing ("Enough of our mania to be the best and the most, he says. It’s time to content ourselves with being average.")