That name was cursed from the start, too. The original "Microsoft Surface 1.0" was tabletop platform that got renamed "PixelSense"[0] years before there was a "Surface" tablet computer.
I recall it was renamed to PixelSense right when the Surface tablets arrived.
Then they named an entire input device line "Surface" as well. When you search for "surface keyboard" you will get results for desktop keyboards and type-covers for tablets.
[0] https://en.wikipedia.org/wiki/Microsoft_PixelSense