> The trans person is “dictating other people’s words” in one, very limited context: when referring directly to that person.

Which, to be fair, everyone with names and/or pronoun preferences (including a preference for the pronoun that is associated with the gender one is assigned based on the appearance of one’s genitalia at birth) tends to do, its just that when either the name or pronoun preference conflicts with someone else’s ideological view of the world, then the person who is trying to impose their ideology over other’s identity projects the other person’s identity as a “political position” and an imposition on liberty.