Steam account names are immutable. I don't recall them ever offering to let you change the login name. Change the username? Sure. Change the email associated w

Steam account names are immutable. I don't recall them ever offering to let you change the login name. Change the username? Sure. Change the email associated with the account? Yeah. But if you've got a near 20 year old steam account, you're still logging in with whatever email address you had near 20 years ago.