By pop-culture output I’d say you’re correct!
I can well remember thousands of films, songs, and television shows made in the 1960’s, ‘70’s, and ‘80’s, and with a rising population the output of those should be more, but I can only remember a couple dozen made in the 1990’s and less than a dozen made in the 21st century, therefore not as many years have passed since the 1980’s as has been alleged.