I think there is a lot of good in it, but I also have a few strong reservations.
I agree that no-one - especially young people - needs doomscrolling, mindless reels/shorts, endless feeds, addictive customisation, 'AI slop'/brainrot, cyberbullying, exposure to predatory adults or insiduous propaganda of whatever type.
I also won't miss livestreaming and pressure to build and maintain a 'personal brand' for young people - although I note that there are people under 16 who do rely on these things as well as advertising through social media as part of a career even at that young age.
However!
I think including YouTube is very misguided - unless it only means a ban on posting content or on livestreaming yourself and watching is still fully accessible. YouTube is hugely educational and it has also largely replaced 'normal TV' for that age group.
I'm concerned about the creep on increasing use of digital surveillance of the population, starting with this age group - the School/Wellbeing Bill just introduced a single digital ID for children across various services and now the internet is going to become a place where ID verification is required....it doesn't seem too many steps further before we are in quite a different paradigm to now, and as with all such things, the issue isn't necessarily how it will be used today but how it might be used tomorrow.
I am concerned about restrictions on platforms which young people engage with in general, because despite all the incel content and makeup tutorials, Insta, TikTok and YouTube especially are where a lot of tweens get their news, politics and exposure to current affairs - I think this might lead to a crop of very uneducated, disengaged and non-politically aware voters coming through and I'm not sure who that serves - but probably not the general public or the country as a whole.
I also think that it won't actually work very well as the kids who obey it will be the ones who already had strict limits and they will then be outcast from the majority who get around it, but now potentially more unsupervised. There will also be 16yr olds thrown in at the deep end because it is likely to push conversations about safety to older ages too (as with alcohol safety etc) and some will miss the information that we currently lay on quite thick in KS2 before phones appear at age 11.