Not to mention that protecting content for overscan has been enshrined in the whole production chain via "safe area" markers. These can be found in camera viewfinders, on-set monitors, and every non-linear editing system around, among other places.
I think part of the issue would be claiming overscan to be a "deficiency" in the hardware. I don't care for it myself, but obviously it was intended to be part of the product, so those who design and manufacture televisions would certainly disagree with the description.