At this point it's damage limitation. Changing the settings at this point doesn't do much, but it is the only thing you _can_ do - it at least stops anyone else

At this point it's damage limitation. Changing the settings at this point doesn't do much, but it is the only thing you _can_ do - it at least stops anyone else seeing it, and stops anyone who has seen it referring to it again in the future (if it was something embarrassing).