Because this isn't old news. This is different from the original vulnerability that you could do yourself by setting the time back. If you read the article correctly or anything in the video it said anyone with the knowledge and tools to pull this off can easily do it over a simple wifi network. Not everyone updates there phones or iPads in a timely manner. Spreading the word about this might help them and save them from morons trying to do this in public.
Exactly. Not everyone updates their phones with every update. One reason being jailbreaks. Another safe thing is to not connect to wifi networks you don't know or trust. It's as simple as that.
Ever thought people like to keep older iOS versions? No, you are just inexperience slightly retarded person who thinks he is the smartest on the world. Shame on you.