"Kelly Ann Sippell’s 1991 Master’s thesis titled Solving the Great Pronoun Problem, highlighted the following third-person and gender neutral pronouns that were used to include and assume ‘him and her’ or ‘his and hers’ in a singular word: hes, hiser, hem, ons, e, heer, he’er, hesh, se, heesh, herim, co, tey, per, na, en, herm, hir, and shey.
But the word that got the most traction before other widely used third-person pronouns was the word ‘thon.’ Thon was coined by Charles Crozat (C.C.) Converse in 1858 and was a contracted form of ‘that one.’ The word was included in Merriam-Webster’s Second New International Dictionary in 1934 as “a proposed genderless pronoun of the third person,” but was removed in their third, Unabridged dictionary in 1961.
"Nonbinary, transgender, and gender nonconforming folks have existed since humans have existed, but giving names and pronouns to our identities is often met with resistance and disrespect when we offer pronouns that aren’t male or female. The same is true when folks use a mix of gender and gender neutral pronouns. Halsey, for example, uses she/they pronouns. Ze, hir, and xe pronouns are also used by folks who don’t identify as either male or female. This video is a great primer to better understand why folks use gender neutral pronouns and how you can learn how to use them."
I'm all for the changing of language (well, it doesn't matter what i'm up for, language is gonna change anyway) - a changing language is an alive language, especially through the more bottom up medium of slang. We don't want to freeze language into some arbitrary dessicated standard invented in the 17th or 19th century - that would be ridic.