If you use the singular they, your cause is gaining traction. The Washington Post announced yesterday that it will now accept the word they when it refers to just one person.
Of course, if you’re an old-school English teacher, a grammar Nazi, or otherwise a pedant, the end of the world is approaching. How will humanity survive if a plural pronoun is used with a singular verb? Think of the children!
As it turns out, there’s method in the newspaper’s madness. WaPo copyeditor Bill Walsh wrote that what finally convinced him to make the change was not linguistic laziness. It was a shift in our culture—specifically, the increasing visibility of gender-neutral people.