Pro tip: Like split infinitives and ending a sentence with a preposition, grammarians of the 18th and 19th centuries proscribed the singular "they" not because it was actually bad English grammar but because you can't do it in Latin.
@noelle fucking grammarians, not even every indo-european language is modelled very well by latin
@noelle any person who says they can’t be singular? They suck.
@noelle if they know what you mean, you said it right
@noelle singular "they" is ungrammatical but singular "you" (instead of "thou") isn't?