My personal favorite story is when I talk my youngest aunt about a videogame my cousin wanted. She said no absolutely not. Then proceeded to buy the game for ehr 10 year old. A game she was carded for. A game that has that it's M rated and has adult themes and whatnot on the box. She called me later in horror about how inappropriate this game I told her about 2 weeks earlier was. How could they make games like that for children she says about the game she was carded for because it's only for adults.
I use her as an example but that situation is a lot of parents. I personally think that it's not the government's place to say how much exposure I want to give my child to the internet, but I have rules and boundaries around that with my kid. Many of her friends have free access and and have always had it since toddlers. People say it's parents not being savvy, but honestly it's parents not caring. Parent controls have been around over 30 years and they have always been dead simple. But they do increase the whining in your life from your kids and that means if parents can allow it a high quantity will. I have no faith that a law will stop significantly more kids than no law. I know too many parents who allow their kids to do things they know are harmful to their kid because "I don't want them to feel left out" or they don't want to deal with whining.