I've been thinking about the VT video overnight (what a life!) and something concerns me...
VT mentions right at the beginning that the menu looks like it is in HDR.
Now, Sony have this bloody annoying habit of the weird way they implement HDR. Via their 4K UHD spinners, you have to toggle DV on or off, it isn't automatic. This is why I own DP-UB820 instead of a Sony X800M2.
I've got the PS5 and for some inexplicable reason, they've taken the unnecessary decision to do the same. They have the option to set HDR to 'auto;, which is the default, but there's nothing automatic about it - HDR is on all the time for everything, including the menus. And not every game has been natively rendered in HDR.
So, I've disabled it altogether but, check on a games list which games are actually in HDR and which aren't.
I hope there is some way to disable HDR for menus because it really isn't required.
Maybe an owner would be kind enough to check please?