Henadic Theologian
Legend
Speaking as a woman who was around during that time, the way I remember it was that mostly you rolled your eyes at the art and moved on. There wasn't much choice because that kind of thing was so ubiquitous, so you expected that sometimes you'd have to push past it to get to the good stuff. Which means that kind of everything started at a -1 or more, to the point where sometimes you didn't even really notice it.
I also remember having a sense of levels of cheesecake--did the cover just have a busty sorceress in a tight but not particuarly low-cut dress? That was pretty tame and I'd barely even pay attention at the time, but I bet it would get some blowback today. But I'd side-eye a full-on chainmail bikini that covered less than half of the "territory," especially if paired (on the same character) with a chainmail loincloth slit up to there. That would be a clue that this thing might not be intended for me--call it a -5.
To be fair there was plenty of Conan style beef cakery as well, maybe not as much, but plenty.