It's the house style at the New Yorker to use it wherever possible or vaguely plausible: https://www.newyorker.com/culture/culture-desk/the-curse-of-the-diaeres

It's the house style at the New Yorker to use it wherever possible or vaguely plausible: https://www.newyorker.com/culture/culture-desk/the-curse-of-the-diaeresis https://www.newyorker.com/culture/culture-desk/the-curse-of-...