Although I personally do not use the hide camera hole on my N20 Ultra it is a good option for many I agree and find it weird why Samsung would remove it from settings, display, and full screen apps !
I would suggest to send feedback to Samsung via the Members App about this and the other issues you've found @Cleo77
Daily Driver > Samsung Galaxy s²² Ultra 256Gb in Phantom Black.
The advice I offer is my own and does not represent Samsung’s position.
I have no affiliation with Samsung.