Block-off dates show "booked" on calendar widget

The block-off dates show "booked" on the single month calendar widget, although they are not booked, they are blocked. Is there a way to show "unavailable" on the calendar widget rather than "booked"?

No, and this is intentional - you don't want it publicly known what dates are actually occupied by a guest, vs blocked for some other reason.  That's tempting to thieves.