Hardware upscalling isn’t needed in a monitor (unless maybe in really really special situations) because it’s almost invariably connected via a digital connection that supports multiple resolutions to a device (such as a computer) with more than enough processing power to do the upscalling itself.

The only situation I can think of were upscalling would be useful in a monitor is one with a VGA connection (mainly to use with really old computers) since that protocol is analog so pretty much any random resolution can come down the pipe quite independently of the monitor’s native resolution so the digital side of the monitor is forced to adjust it (and a proper upscalling algorithm is a lot nicer than something like double sampling the analog signal)

The previous poster was wrong about upscalling being common in computer monitors nowadays (I vaguelly remember it in the early LCD monitor days because of that VGA problem), but that doesn’t mean you’re right about upscalling support being present in a device beimg the same as there being everything in there necessary for full Smart TV functionality - I’m pretty sure upscalling comes as an hardware implementation of an algorithm, so it’s not a generic computing unit with e the right peripherals, computing power and memory to run an Android system or equivalent that just so happens to be running software upscalling.