I was raised by the internet, wouldn't recommend it, but I turned out alright. If a parent is negligent, that doesn't mean a kid can't figure it out for themselves. I'd say, it set me back 5 years in terms of responsibility/ethics/etc. But that's life.
There has to be an ordinal structure of authority regarding children. Ambiguity leads to what we have now. So who gets first place in terms of responsibility? Always parents. Parents have been shitty for millennia, but who's a better person to put at the top of the authority hierarchy, the government?
So no, I would be careful about allowing my children onto the internet, but I am absolutely against the government getting involved, period.
