Any actual reasons or are we limiting them just because? Vibe based governance?

My parents were sure that sitting too close to a TV ruined your eyesight. Should we get a law that forces people to sit at least X meters from the TV? Personally I'd like to see some evidence first, instead of "but we must limit freedoms".

"This law might force kids into doing something other than whatever they want, whenever they want, with zero consequences. What happened to freedom?"

So many people have wacky ideas on how to raise kids these days. I question the effectiveness of laws like these, but they are worth trying out. And I think a lot of parents in my generation (millenials) need some serious assistance with teaching kids boundaries.