The venerable Merriam-Webster Dictionary has added a new definition to the pronoun “They.” It now not only describes groups of people, but also a singular person when that person does not identify as just a male or female.
They is “…used to refer to a single person whose gender identity is nonbinary…” the definition says.

Dennis Prager University tackled this topic in “Control the Words, Control the Culture” worth your 4.46 minutes of time:
