It seems annoying because personal names like Jenny and John have grammatical gender in English, so the unknown grammar use of they&#x2F;them&#x2F;their seems unnatural. It&#x27;s also perhaps why similar-sounding names are generally spelt differently between genders, e.g. Danny&#x2F;Danni, Jerry&#x2F;Jeri, Tony&#x2F;Toni, Billy&#x2F;Billie, Francis&#x2F;Frances, Robin&#x2F;Robyn, Sidney&#x2F;Sydney.