the world is full of idiots, imbeciles, children, neanderthal types, under-educated doofuses, ill-educated chavs, senile people, etc etc, so what may be patently and blatantly obvious to you, will not be to everyone, and as the prof has said, the news has to be understood by everyone - possibly these people more so, as they perhaps wouldn't sit and read large well written and thorough articles about the subjects, so almost soundbite chunks of news is all they may know.