I'm on a tour in Vermont right now and noticed the added feature to RWGPS last week. Seems like a nice feature to have even if it isn't 100% accurate. Google maps and paper maps aren't 100% accurate either. Just par for the course.
Tomorrow's route is looking to be about 75% paved and 25% unpaved. If it turns out to be 70/30 or 80/20 it's not a big deal. Not sure why the OP is upset.