It is difficult to demonstrate your readiness when you've never been allowed to use it. Access + monitoring and support is a better strategy than hiding technology from your kid. Unless you are Amish, your kids are going to get dropped into the deep end.

Like all the old people on facebook demonstrating that their decades of life experience has taught them to recognize obvious bullshit..?

That strategy is proven ineffective with abstinence only sexual education, and I'm sure the exact same problems would arise applying to online access.