It is in the nature of the New Yorker to be as topical as possible, on a level that is often small in scale and playful in intention.
Many people you think are individual achievers in fact have either a strong spousal partner over many years or a business partner who's either in the background, not given enough publicity or less egocentric.
There's a practical problem about time and energy, and a more subtle problem of what it does to a writer's head, to continually analyze why they write, where it all comes from, where it's going to.