I think you do need a free and open internet. You just can't let kids get to it. There are enough niches on the internet that any sort of depravity will have an entire community in place to make it seem tame, commonplace, and acceptable. It requires a hugely mature mind to navigate the internet - and so much of the current and blossoming issues are because innocent minds have been allowed unfettered access to an ecosphere of enticing insanity. It's a mess! And on a side note, there is STILL NO reliable way of providing children age-based, limited-access internet. It should have been #1 priority 20 years ago now.