There are two forms of pronouns. The correct form is multiple pronouns, “he/them” or “it/she”. They are alternatives, both can be used. I think the first is pre

There are two forms of pronouns. The correct form is multiple pronouns, “he/them” or “it/she”. They are alternatives, both can be used. I think the first is preferred. The second form is different cases, “he/him”. I have theory that people started using that because they didn’t want to put just “he”. They were following the multiple case form and it stuck. People aren’t really specifying cases because nobody uses different cases and nobody puts cases in the multiple pronouns form.