If you clicked the link:
Pronoun
thon (third-person singular, gender-neutral, possessive thons, reflexive thonself)
(nonstandard, rare, see usage notes) they (singular). Gender-neutral third-person singular subject pronoun, coordinate with gendered pronouns he and she.
(nonstandard, rare, see usage notes) them (singular). Gender-neutral third-person singular object pronoun, coordinate with gendered pronouns him and her.

What’s inaccurate about the cartoon?