Everything can be toggled on and off, except for the "note status" in the top right corner.

it is not a big problem, except the red question mark emoji is really ugly.

I would hope for an ability to either:

Hide it all together - commands + sidebar is a reasonable use case.

Be able to customise the standard symbol "Unknown" status uses. (Best option)

Or be able to toggle on Display " " instead of the "❓" if Customising it is too hard. (Second Best option)

or somehow hide the button unless property of obsidian-note-status exist in the note. (Worst option)