Free speech?
What is the betting that Meta will plead the constitutional right to free speech on most of this?
Sadly we have been harming children for ages with air pollution, discrimination and abuse (I doubt that 'Child X' who was knocked off his bike by a police van for playing with a brightly coloured toy water-pistol, will be having a good night's sleep any time soon*). There may be some actual breaches of the law, but sadly making something psychologically addictive is going to be very difficult to prove as there are the precedents of 'cliff-hanger' serialisations in magazines, on the radio and on TV, all designed to get you to tune in same time, same station next day / week etc. And as for sugary / salty / fatty food, most 'western' countries are full of it: chocolates, burgers, ice cream etc.
It will be interesting to see if this ever gets anywhere close to a hearing in court.
* https://www.theguardian.com/uk-news/2023/oct/19/met-rammed-boy-13-playing-with-water-pistol-off-bike-and-pointed-guns-at-him