That's getting harder as software continues to get better at bypassing network-level snooping or content blocks (which are often done by entities like malicious Wi-Fi operators or the user's ISP, neither of which have any business deciding what content the user is allowed to see).
I can. Good luck to people who aren't paid to make computers jump through hoops as their day job.
I'm not even necessarily saying the government should step in with heavy-handed regulation, but "parents should just manage it and leave the rest of us alone" gets less reasonable with each passing day.