As someone who did this exact thing--created my first account, disliked the family name, so deleted the account and made another account, it was a bit frustrating.
First of all, deletion of the account takes a few days, so you must wait to create your new account. For me, I really wanted to play BM because it seemed pretty cool. Waiting two or three days just to join again was quite the frustration. I can easily see how someone being forced to use that method could walk away from the game. Either out of disinterest or merely forgetting about it.