I don't see the conspiracy to create voice assistants that don't work very well which is what you seem to be complaining about and which, as far as I can see, pretty much everyone on the thread agrees with. Voice assistants just aren't very good so they're mostly mildly useful for people who don't need them for anything important. I'm not sure what you would necessarily do differently to make it more useful for people with disabilities other than making it better, in which case maybe I could actually use it for something useful in my car.