Parents won't parent without a change in incentives. That's why giving children access to social media must be punished to the same degree as giving children heroin. If it's a parent's responsibility, it must be made a parent's liability. Anything without the full threat of the government's monopoly on violence is just a pretty slogan. We should see access to social media as the neglect that it is.
Since the beginning of the computer age kids have found ways around parental controls. I'm very skeptical that it's a good idea to punish parents for that, especially since the kids are likely more tech-savvy than the parents. And, in many cases, "parent" singular. Putting a single mom in court, in jail, because she works 2-3 jobs and her kids are more knowledgeable than she is about computers? C'mon.
This applies to more than just tech and money: being unable to give your kids attention because you need 3 jobs to pay for them is just as bad for the kids as being unable to give them attention because you're busy gambling or a drug addict (it does makes a difference to whether you're a disgusting person, though).