This may be the case but I would rather not spend tax money playing whack-a-mole with businesses thus artificially creating new revenue models for lawyers. I would rather just put a technical solution in place that empowers good parents to have some control over their own devices and let them decide when their small children are somewhat psychologically armed to handle the internet. RTA headers do not require integration with any third party sites and does not add tracking or additional identification.
Sunak and others have been pushing for rules that would require sites to use third party identification sites. This is a non-starter for me personally. It is very obvious to me someones pockets are getting lined by people interested in adding more tracking to the internet. I see this as the UK trying to extend its CCTV system to the rest of the world but perhaps I am a bit skeptical after watching the behavior of governments for many decades. It is also a bit curious that US politicians have also been pushing for this at the same time. These recent events really smell like a startup trying to get funded by multiple governments. Investors love government contracts because they are usually multi-year and get written into policy.
In terms of disciplining parents that neglect their children there is already a system in place for this. The first time should be an infraction that requires the parent to do an online training course. Perhaps under extreme circumstances a misdemeanor and at some point social services step in just like in any other repeat neglect case. In reality this should not affect most parents. There should not be any jail involved unless the parents are intentionally putting the children in harms way such as encouraging the kids to pose nude for strangers and inviting said strangers over.