The point is to prevent the detrimental effects to the mental health of teens and preteens. That doesn't work unless you plug the holes. That's the problem. Fallacy in argument or no fallacy.

The point we're trying to make isn't that we don't want the restriction. We just understand that it's not going to work specifically because it requires the same thing the under 13 privacy laws already include. Companies to comply (which they will, probably with detriments to legal users), and that parents be involved in what their children are doing online and restrict that accordingly to comply with the law (which we already know they aren't).

I as a full grown adult am not willing to provide my details (picture of a government issued ID or similar) to most online entities. I certainly won't ever be giving it to social media or a porn site of any kind. But that's what's going to end up being required to enact this law and make it enforceable. Is the law going to fine parents whose children aren't in compliance? Is it going to fine businesses for not enacting enough restrictions? Is it going to outlaw VPN's for use on social media?

Where is the burden of proof and who's privacy gets invaded in order to enforce the law?

I was not (in my original comment or any subsequent ones in the thread) intending people to take this as "we shouldn't do this because XYZ". And I am aware that you weren't responding to me. I was saying that it's going to be problematic to enforce and isn't likely to have the results intended.

It's not about the handful of people per hundred who commit a murder. Because murder being illegal isn't a deterrent and we have scientific studies to back that up. It's about how 75-85% of teens will find a way to circumvent the law because they don't understand the dangers and parents aren't doing their part. So the rest of us will have to jump through hoops to use any social media.

If 75% or more of people the law effects aren't following the law, the law doesn't do what is intended and is going to have to be reworked.