If Meta did advertise the "safety of its platforms for young users" then they should be held accountable for that. It seems clear from the whistleblowers that Meta had internal data that they knew they were not safe for young users, but Zuck gotta get those ads($$$) in front of young kids.
Modern cigarette companies
Yup, this is the real issue.
You can't realistically make a space that's free from predators. The real answer is teaching children to recognize unacceptable behavior. But most abuse is from inside--typically adults that the parents put in a position of trust or quasi-trust.
I do not fault Meta for there being predators, I fault Meta for pretending they're being kept out.