Yes, there's a dedicated "BKT" button in the control cluster on the top panel, alongside the drive mode button to enable auto bracketing (i.e. take the entire set at once) right next to it. It does have the infuriating caveat I mentioned in that it can't do solely positive or negative bracketing though. A really strange thing to miss out.
Oh dear, the bracket button on my D850 saves a lot of time messing in the menus. Looks like I will be off to take a look at the Z8, as this stupid little feature is something I miss on the Z7