Anytime on TV or in a film when a diabetic loses their insulin or gets lost and becomes ill, the first thing they seem to give them is a sweet drink or sugary foods. Surely this is bad and could give people a wrong idea about diabetics?
There was a forum thread about this recently re ambiguous first aid advice from a charity.
Obviously, usually a person would be able to explain what they needed, so any confusion would be avoided.
But if a person with diabetes is found ill and/or confused, then yes, it's best to assume they're low and give them something sweet. That's the official First Aid advice.