i think a lot more afab non binary people use they them he him or just he him pronouns than amab non binary people using she her pronouns because using he him pronouns are almost like the "gender neutral" pronoun of society. people will use he him when unsure of the gender, so+

it seems almost as if he him has less of an attatchment to a binary gender than she her does, because she her will only be used when sure of the gender in society (ie policeMAN, HE was driving awfully (when no one knew the gender of the person driving))