alt Hacker NewsIt's not implemented like that because the true goal of these laws has nothing to do with protecting children or age verification, and instead have everything to do with completely eliminating anonymity/pseudo-anonymity online.
They want to ID everyone, and have all user generated content attributed to a known, identified individual.
I think it's mostly easy to identify anyone if you actually want to - if you buy anything online you are 100% identifiable for example.
Given the pros/cons in context, I think I'm in favor of it for social media, at least. I'd actually argue you would want to go further and you should have your full address, employer, and more available online. LinkedIn is a cesspool of awful salespeople, but you know what it's not? A massive Russian/Chinese/Maga disinformation site. Maybe you should think twice before saying something online you wouldn't say while standing in front of your house or at work.
Anonymity on social media has brought a lot of problems and I'm not sure what the benefits are. Some point to a small percentage of folks who would be "outed" but, given that the alternative seems to be an emerging dystopia of bots, malicious actors, propaganda, and more, maybe actual transparency is better even taking into account potential harmful effects.
I'm open-minded on this and see pros/cons either way. Though I think if you find yourself worried about this stuff you can just delete your accounts and move on with your life. Trust me you aren't missing out on anything.