Hi Shikki! They do have free reign, and since it's unique to their in-game ID, it would be a lot like Discord - only rather than having a unique series of numbers following a name, it would be to their real name. It would be something like handle (firstname.lastname). There is no real way to be anonymous online, though a lot of people are incidental or don't matter. As a note, this is how handles work for all online accounts, from MMOs to conspiracy forums! The reason why these display names aren't allowed to be changed for the Morningstar-supplied network is because anything flexible like this could expose flaws in the highly encrypted system.

They are able to delete their accounts, though most account deletions happen for people. Some of these deletions are as tame as someone leaking a spoiler for a movie or TV that leads to a corporation protecting their property, and some are done by the NAPD or other official agencies to keep a situation from escalating. Otherwise, some people delete - or, in some cases, reset - their accounts to get a "new start." No one does it to perform a social media cleanse, but, like today, someone might reset or make a new account because they upset someone and got people all up in their mentions.