That's true Coca, but it doesn't mean that there is no need for these campaigns. They are there to raise awareness, teach new strategies and also prompt people into acting.
The mother in the video had taught her child about "stranger danger" but what the experiment highlighted was that actually, the child didn't understand. Maybe he hadn't been taught properly or in a way that he could process it. To me it looked like he was just parroting the saying "stranger danger" but he didn't actually understand what it meant.
These campaigns give people more advice, such as not just focusing on strangers but also people they know too. It is there to help parents and I can't see how it does any harm.
Most adults are aware that they could develop breast or testicular cancer but the campaigns to raise awareness might prompt someone who wasn't so clued up or just forgot, to check.
Just because it was in the daily mail, doesn't mean it's irrelevant or scaremongering.