For the record, OSM allows multiple accounts as long as this freedom is not used for the purpose of abuse. See https://help.openstreetmap.org/questions/23027/multiple-accounts-allowed

I have called this out only because the account was created before an agreement was reached regarding the vandalism, and so there was abuse potential.

If you'd like to create an account and start with a clean slate moving forward, it's entirely your right. 