The prevention system like typing your characters name is there not to prevent deletion, but to prevent ACCIDENTAL deletion. It takes more time than "Do you want to delete X? Yes/No", hence you're likely to read that it is deletion function that you popped up.

If you want a character deleted, you want it deleted. There is no reason why there should be any other part to it. Any security layer added on top is technically unnecessary, because if another person have the ability to delete your character, either they would have the ability to do it with that extra layer (hacking the account and its data directly from servers) or it's entirely your fault (like letting someone else play your characters). Aka...the password for logging in is the anti-deletion password. No one besides you at any point should have access to your account, so if you share it, your problem.