Legally, they can't be sure you didn't sell the account, even if the email address is the same.

Not defending the policy here, it's bullshit. But I'm simply pointing out that they have excuses to beat any logic you throw at them. Logic has nothing to do with it, so it can't be beaten by logic either.

Well no, what if you have a Benjamin Button situation going on and will be too young to use Discord in a year or two?They gotta cover all their bases.

Naw, they assume they can tie all your conversations to some nexus realid and sell all your groups, likes, and dislikes for cash.