I mean, yes, but at the same time, album art is a pretty normal thing to have along with music. And actual cellular data is just radios, but on different wavelengths and whatnot. So it’s not really a stretch to imagine sending arbitrary data along with music over a radio wave. And some of that data is actually very useful, like the track name or artist name.
I don't know if that is true. Considering one of the issues with Mazda is text parsing. My ford doesn't transfer all the epg data from the radio module to the media unit and it requires a several hundred mb update when radio stations change their logo as people now expect radio station images since it is part of the dab standard.
If that's not a sign that people are making the simplest things Way More Complicated Than Necessary(tm) I don't know what is.