I was just listening to NPR and apparently they added a “singular use” of “they” to the dictionary! This link is about the story but doesn’t seem to include that tidbit. I swear it happened!
The guy on the radio didn’t seem to attribute it to any social progress, but rather just to the fact that we’ve been doing it so long that it’s stupid not to include it. Either way, now it is GRAMMATICALLY CORRECT not to assign the male pronoun to mean a neutral, singular pronoun.