blocking users from username only?

it would be really convenient to be able to block a user just from their discord username, for example, i recently deleted and remade my discord account and i want to keep my blocked users blocked from my past account to prevent possible future run-ins with them, but since it's a new account, i no longer share servers or have dm history with these users, so i can't access their profile to re-block them, and i don't want to send them friend requests just to block them either. can it be made possible to block a user by typing in their username?