IF they find out.
My mom kept her purse by the door, mostly, not in her bedroom. If age verification had been an issue, I would have sneaked downstairs at night, slipped out her DL, taken a photo, and registered on whatever sites I needed.
If they sent some sort of verification to her email, I’d just log in, answer it, and delete the email. Of course I know her passwords, I showed her how to do it, and I’m always fixing some dumb thing she did.
Any kid is going to figure this out faster than me.