This issue came up a year or so ago and from memory one of the Mods (Pops I think) reassured everybody that this is part of a standard list of questions provided by Motability that dealers are supposed to run through with customers before accepting an order, so it’s nothing sinister.
In reality, I think that most dealers feel as awkward about asking these questions as we do being asked them, so they probably just tick the relevant boxes without asking the questions. I don’t ever recall my wife being asked any of these questions when we have ordered any of our Motability cars, but as she’s a full time wheelchair user perhaps they feel that it would be particularly insensitive?