By the same token - a recording of someone walking around for 3 minutes is also a "song".
You're comparing ambient sounds, which are more than likely made with musical instruments, to someone walking around? That's not a very good analogy.
agree with sacul that the 80's as a whole sucked for music in general
Agreed. There were maybe a handful of songs from the 80s that I would say are worth listening to. The 90s, on the other hand, were a decade where different musical directions were explored. Some good, some bad.