To be fair, it isn't easy for most normal people to stay anonymous on Facebook. Not everyone can buy a burner phone, always use a VPN and avoid using the site on a mobile. Your anonymity is going to be compromised the second you sign up for it even under a false name.
Step 1: get off Facebook.
Or if you really must use FB, use the TorBrowser for it. Facebook even runs a darknet Hidden Service (I know, wtf!)
And your point was...?
That's true. So I think we should stop calling them normal people and use a term indicating that ther are semi-competent people of legal age, but require a true adult's supervision to go online. I can't think of a suitable term, so I'll go with, "idiot."
I have no sympathy for people who share their entire lives on facebook and then suffer dire dire consequence as a result. I don't care if they're 13 or 80. Personal computers have been around and accessible since the early eighties, so gramma and grandpa don't get a free pass, either.
A person needs to learn how to use their tools properly or they get burned.
If they've overshared and made themselves targets for opportunistic thieves, tough, maybe they'llre-think what the heck they've been doing. I doubt it, but it might happen.
People give away their identities to join those social sites without regard for what happens to their data and personal information.
It is one's own responsibility to keep real life separated from one's online life.
Sounds like a case of tough beans.
Anyone stupid enough to link their IRL identity to their on-line life deserves what they get. Maintaining one's anonymity while on-line has been a basic privacy rule.
Idiots.