Earlier quoted context omitted.
What else does anyone use the term satellite dish to refer to?
Any antenna that's parabolic in shape that isn't designed/used to communicate with a satellite is just called a satellite dish is common usage, but technically really shouldn't be.
I wonder if it is regional or has other socioeconomic factors? Actual satellite dishes weren't common structures when I was growing up, outside either a sports bar with satellite TV feeds or more commonly large dishes on industrial, military, or scientific facilities. Other, smaller directional antenna were more commonly seen on radio towers etc.