(...)and it help differentiate up from down(...)
Good catch. The remote really did bungle that aspect. On the phone, the chirality of the side button layout gives some feedback to orient the user, but the notch adds one more datapoint. On a remote, you're not really looking at it, and the buttons are close to the center.
If they want to make the camera disappear altogether, the new patent for through-screen cameras, initially intended for use as a fingerprint sensor, will solve it in the end. You "just" make a volume gradient index microlens array, then stack it coating, microlenses, touch sensor, second microlens layer, phosphor matrix, gallium nitride microled panel, subtractive color and angle filter sheet, full size camera array, pressure sensor and backing layer. By the time the process works reliably, the computing power will be sufficient to make sense of the camera's lightfield to store it compactly (I will keep my fingers crossed they go with multispectral and polarization so we can do neat stuff with it), and to drive enough pixels in the panel that the screen can display a lightfield (shouldn't be much more than 16K in a device the size of a phone). A kilonit or two with deep blacks should help. Boom, real 3D overnight, a window into another world in your hand, and nobody wants anything less, ever again.
Why waste time on a pop-up detour when a notch works just fine and avoids having to reorient the screen to your hand while that's still hard to do reliably?