Yeah. I think the shape of what that looks like is still TBD, but I think you are right.
I don't yet know personally what I want it to look like (and reserve the right to change my mind many times over the next few years) but there is no reason to stick to the conventional paradigm of "monitors" when in theory you could just let every window or widget float in space, independently or in sets.
Allegedly some of the VR desktop environments support app windows although the one which looked most promising is Quest-only.
I find it baffling that MSFT cannot figure out how to give arbitrary apps their own window in WMR and have to be written specifically to do that. Also: How is their virtual desktop app so bad compared to even the free Desktop+ on Steam?