Personally I think there's possibly an intersection of people who want a "dumb" tv and people who would do something similar to this, I for example, would love to have a "dumb" tv and just hook up one of those firestick/chromecast/other-product dongles into one of the available HDMI ports.

I really see no point in having an integrated computer in my TV that's just gonna be stop being supported a couple of years down the road, might as well have that part be detachable for when it becomes obsolete, I'd just buy a new one, the display would still be good.