A device-side IP filter locked behind a password that parents can configure in the device's settings would be much more effective and easier to implement than censoring the Internet. This should be the default solution, yet it's not proposed by governments. These online content censorship laws for kids are wrong in principle because parents are supposed to be in control of how they raise each of their own kids, not the government or other people.
The other excuse being used to push these laws is CSAM scanning. But CSAM scanning ignores the actual problem, which is the trafficking of children in physical space, not the tools used to transmit and store child porn, which are general purpose tools used to transmit and store anything. A society's efforts and resources, as a matter of priority, should be spent on preventing children from being trafficked in the first place.
These attempts for more surveillance and control are being pushed under the guise of these very bad excuses, and we need to call them out in every conversation to reduce the number of gullible dorks that might vote for it.
People need to actually understand that governments are very close to having the tools needed for authoritarian governance all around the world. It might not happen immediately, but once the tools are built, that future becomes almost inevitable.
We can't just hope to rely on technological measures because we can't out-tech the law at scale all of the time. But we can and should fight back on both fronts. On the technological front, the first step is securing VPN access to ensure anonymity on the Internet. The best effort at the moment IMO is SoftEther, which is VPN over Ethernet wrapped in HTTPS.[0] It's open-source. It has a server discovery site called VPNGate.[1] You can host a server to let somebody else use, then use a server someone else is hosting.
[0] https://en.wikipedia.org/wiki/SoftEther_VPN
[1] https://www.vpngate.net/en/
We're really only missing a few things before there's decentralized VPN over HTTPS that anyone in the world can host and use, and it would be resistant to all DPI firewalls. First, a user-friendly mobile client. Second, a way to broadcast and discover server lists in a sparse and decentralized manner, similar to BitTorrent (or we may be able to make use of the BT protocol as is), and we'd have to build such auto-discovery and broadcasting into the client itself. Third, make each client automatically host a temporary server and broadcast its existence for other clients to discover.
If we can make and keep the Internet a free place, these discussions can keep happening without fear of censorship and prosecution, and people can coordinate to fight authoritarianism and create better technologies to guard against it in the future. This is very much doable if we tried. So let's ensure the free flow of information is not a temporary blip in the long arc of humanity's history.