5/ Second: The "duty of care" imposed on platforms is unsalvageable. What is in the best interest of one minor, might be in the worst interest of another: minors are not a monolith and there is no one-size-fits-all solution.
There is no way to *possibly* meet this duty.
Except, perhaps, to limit minors' access to anything but the blandest content safe for even the most sensitive user.