Stupidity about dementia

My husband was walking back from the train station across a green.He couldn’t recall any more.He had got a hypo and fell unconscious onto a War Memorial.He broke his nose,cheekbone and other things.

I heard the doorbell ring.There was an ambulance in which a paramedic was screaming at him.She asked me if he had dementia as he failed to answer her queries about who was PM etc

It was obvious he had no idea why he was in an ambulance.Or why the 2 people were shouting at him.He was covered in blood and his eye looked as if it might fall out.Luckily his specs protected it.

I told them to shut up and explained quietly what had happened.He was as normal as anyone might be.

Why would a paramedic think shouting at someone old and semi-conscious was a good idea?

BTW I had told the doctor  he was over-medicated and had fallen before but I was told his health was  a secret I had no right to discuss.