I'm guessing that it is a money issue. They don't want to have to pay a para or whoever to be available to scribe for your son. If they subtly make it harder and then he no longer bothers to access the accommodation, voila! he obviously doesn't need it so they can eliminate that staffing position. Stick to your guns.
As to that "enabling his disability" comment, I give you credit for keeping your cool. Your son has a physical disability that limits his ability to write. That crap tends to bring out my sarcasm, i.e. do you tell the parents of kids who wear glasses that they are enabling their kid's vision disorder or the parent of a kid in a wheelchair that they are enabling their kid's mobility disability?
