Q: Apple Security Can't Reset Security Questions? Apple ID loophole

I just got off the phone with Apple Security and I'm a bit baffled and annoyed that they can't 1) reset an account's security questions, or 2) outright delete it. Here's the scenario:

1) Someone in Vietnam creates an Apple ID, password, security questions, etc using my mom's gmail account. This is a complete stranger, and they don't have access to my mom's gmail account so they can't verify it. I'm not sure when this was done, but it's saved to Apple's account.

2) I bought my mom her first Apple product, an iPad, we're in Canada. I can't create an Apple ID, so I reset the password... I'm confused as this account shouldn't exist. I successfully reset the password, and when I log in, the First Name, Last Name, birthday are all foreign. I change the names, but I can't change the birthday without answering security questions in Vietnamese. ???  I try to reset the security questions, and it prompts me again to answer the security questions I didn't create nor can I read.

3) I call in, the Security team can't reset the security questions or delete them. I get escalated and the manager can't do it either, they get these prompts, so she gives up and tells me to abandon ship and use a different email account or use iCloud. I don't want to use iCloud or a different email address...

So I'm wondering, how in the world is this possible? How can a stranger sabotage someone's potential or future Apple ID? And why can't Apple close this loophole?

PS: Here's the reference. It makes no sense as I get prompted when I try to reset the Security Questions...

If you forgot the answers to your Apple ID security questions - Apple Support.