One time I was messing around with the settings for a 3D printer in whatever software I was using to control it, and found a dropdown for "Machine type" or similar that defined my printer as a "3-axis robot." That gave me pause. Is it a robot? Maybe. That printer didn't even have any sensors, apart from the thermistors that fed into the temperature control PID loops. But by someone's definition, it's a robot.

That was and remains fun to think about. I guess that like the author, I will "be pedantic all day long."