Most notification categories of the System UI are grayed out and can't be changed. I would love to be able to hide the "Do not disturb" symbol, especially on the lock screen and AOD. It is not even possible to hide it in Good Lock's Quick Star.

Reason: I love to use the do not disturb mode to focus on work. When I do, I know that only important symbols will be shown on my AOD. But the do not disturb symbol being there the whole time is distracting, because at a glance it looks like a notification.