It's going to be a mess, while the spirit is well intentioned it has edge cases up the wazoo, foot guns galore, and stinks of back door government ID for adults.
Pretty much the only media outlet in Australia that stood up with questions and non fawning commentary was Crikey:
eg: https://www.crikey.com.au/2024/11/26/teen-social-media-ban-s...
and: https://www.google.com/search?q=site%3Acrikey.com.au+social+...
This was deeply rooted in traditional media ( Murdoch News et al ) in AU putting pressure on the Government in AU to take action against Facebook & Co. after the ceasation of payments for linking to news media.