[charcircuit]

Linux requires a user account too. There is no anonymous mode. You will always be running something as a user who has a user id. getuid and geteuid are always successful and correspond to a valid user. In theory there could be a way to run things without a user, but Linux was designed to not allow that.

[felixgallo]

Linux user accounts are local to the system, not centralized in a cloud service. There is no corporation tracking or monetizing your uid or gid.

[charcircuit]

That's beside the point. Linux has a login wall before you are able to do anything. You must have an account in order to use it.