If your account is a decade old, and you registered at 13, you're now 23 and they don't need to verify you're older than 18. If you were younger than 13, they might be required to delete your account.

It’s tragic but I have the “verified” setting turned on my public server because it’s literally impossible to stop a determined spammer with the tools Discord has. They can make new accounts faster than you can ban them, and there’s no like “IP ban” equivalent