I take the pessimistic view that "ze" and "hirz" will eventually be accepted into our language and incorporated into K-12 English curricula. Just as "BCE" (before the Communist era) and "CE" (Communist era) are rapidly replacing "BC" and "AD" in historical dating.
Does this mean those golden oldies need to be renamed? Zir’s a Rebel, Zhe Loves You, To Zim With Love, Walk Like a Zhe, etc