Coming from a social scene in which I'm involved in modding and deconstructing video games, this behavior was immediately apparent to me. It's the same contrived story that cheaters use to explain why they really really need a feature that gives them an advantage over other players in online games.

The story itself being true or not doesn't really matter - they're weaponizing an appeal to emotion by using a disabled person as a prop to violate everyone else's standards of interaction.

Count me as a weapon, too, then.

This is not weaponizing to a single disabled person. I am not disabled, but I have always had difficulty expressing myself effectively, and that difficulty has increased as I've aged. I use AI to help organize my thoughts, to help give voice to that little tidbit of an idea that is trying to escape, and it has been a genuine help. Asking me to not use that assistance is similar to asking a user to not use accessibility features. It's an asinine policy and is an overcorrection.