Tell them about your sexual orientation and fetishes and imply that TV is responsible for them.
Assuming that all of your experiences until now are what have made you who you are, you won't be lying.
Anyway:
1. Yes
2. I only bothered reading the article you linked to and skimmed the yahoo article that it links to, but I'm getting the impression that it's bullshit. The conclusion is based on the idea that correlation implies causation.
How do we know that watching lots of TV and playing games causes mental heath problems? Maybe children who already have mental health problems will be drawn to the virtual world because there's nothing for them in the real one.
Or maybe they have a common cause: maybe children spend all day in front of the screen and have mental health problems because they are bullied? Or maybe they have bad parents who let them do whatever they want but also badly affect their mental health?
Of course, they study may have taken these things into account. Maybe the news articles were being sensationalistic and misrepresenting what the academics said.
3. It's impossible to tell. If it has had any affect on me, it's way down on the list of influences.
Also, why was there a girl cosplaying (quite well) as Hatsune Miku in that page you linked to?