I don't think network-level filters are the best way to address it. But let's stop pretending this is as simple as telling some lazy parents to get their act together.
Finding it really hard to sympathise with these people who can't look after their own offspring responsibly
Actually the internet is much tamer now than in the 90-s. And we survived somehow.
I've also heard there have been increased expectations of anal sex from teen girls due to its increased prevalence in porn.
Now, everything is starting to have internet access in one way or another including games consoles. Whilst very young children might need a lot of supervision regardless, I don't think 12 years olds are going to be too happy with their parents sitting in their bedrooms with them all evening while they play xbox.
Do you seriously suggest all people with kids to have a full-time job of watching their kids tap on their tablets over the shoulder? Who's going pay the wage?