Aha… In my last post I thought you were discussing who is better off, the one who does well after being brought up that way, or the one who does so despite being brought up differently. It seems that you are discussing something completely different.
You want to know is it better to shelter your kids or not. Well, obviously if the sheltering is going to lead to what you say it will, then sheltering is bad. And there is obviously a line past which everyone will agree that not sheltering is bad – even secular law places age restrictions on certain things. So the question is, where to draw the line? That’s really a loaded question, because it depends on where you live and what your kids will inevitably be exposed to and what they won’t. There is no need to let your kids watch Nick Jr. if none of the kids in their class are and an honest judgement of the society you live in says that they will never be exposed to it before they are responsible, mature adults anyway. If based on sociological phenomena you conclude that they will sneak off, or perhaps other kids are doing it and they will feel deprived, then you would have good reason not to shelter them. Point is, you have to judge your situation very well; there is no one-size-fits-all answer to this question.
End ramble.