I don't know, consider the context of the time. Record labels, Blue Note especially, were putting out albums to the masses with beautiful African American women on the covers amidst horrendous racial discrimination and often much worse. Representation matters. It's not like they were all distasteful and done for pure titillation like that one cover of the gal over the shower door. I like experiencing albums, album covers and the like as a snapshot in time, revealing something about our past through art.