I mean, we all saw the occasional heinous stuff, goatse, lemon party, etc, that doesn't ruin you. I don't think preventing them from ever seeing anything disturbing is a realistic goal. It's more an issue when kids are allowed to be fully addicted on an ongoing basis instead of spending their time doing things that help them grow. I think keeping them from spending all their free time on youtube or in Roblox is more the goal.