only cis people include the possessive pronoun
When would someone else use your possessive pronoun? If they were writing your biography? Has anyone ever differentiated them/themself?
I mean, possessives and reflexives do show up. E.g. ‘it’s theirs’ or ‘she bought it herself’. That being said, unless youre using pronouns people arent assumedly familiar with theres no point in including the possessive and reflexive forms.
Arguably the inclusion of the object form is just because people were using pronouns that required it to be listed, such as ‘hir’, and so when people using they, she, or he pronouns went to include them in a bio or something they copied what others were doing, which was more neopronoun oriented. Idk im not an internet history scholar or anything if someone else knows more do chime in.
I’ve seen the object form be relevant when it comes to (s)he/they which isn’t neo, but still differentiating.
Thank you for your insight!