Maybe true but there are a large number of Covers that were made genuinely to look cool in a Disco era.

Here in Sweden we have this thing called "Dansband". That is a treasure trove of cringey album covers that I believe were mostly genuine.

One of the bands is even called Junix, I remember finding a tape of them in a car once. It actually said UNIX but I can't find any reference to this old band name now, they're all called JUNIX.