Etsy requires government documents to verify all new accounts, just like many other third party seller platforms in recent times. Many other vendors who create  Etsy accounts premade have used fraudulent or stolen information to pass the verification process. It is you who they sell the account too who takes the risk by starting a store from it and adding your bank account. Even if you were to change the details once the account is received it does not change the fact that the account was originally made under someone else’s government ID. Them details stay into Etsy system forever. Adding your real details after only makes it easier for the Feds to find you for Identity fraud.