The closest source I have to hand "the doctrine that knowledge, truth and morality exist in relation to culture, society, or historical context, and are not absolute" does seem to cover some of the arguments dealing with Goodreads' censorship. I don't deny that the world's a complex place but when you get down to the nitty gritty I don't see a third space we've carved out for yourselves between relative and absolute values. Literature is not just a social pursuit - if it was, it would be a hobby. Name an education free of the teaching of it in our society? And why would it be universal to our society in that way? It is, in Donne's sense, involved with our social sphere in a way that buying small-gauge railway models is not. But if you are determined that literature is just a social pursuit then indeed, we have no further point to discuss.
Amazon are compelling us. One may wish to view it simply as they are offering each of us a choice, and that if sufficient numbers of us choose then we will have in effect voted to change our society - in ways we may not have considered, in ways we may not want, in ways that a minority of us who have never purchased anything from them are powerless to resist. They are no more compelling us than cigarette manufacturers, or the government, or drug dealers, or manufacturers of greenhouse gases, or the nazis, and so on, and so on. I see the logic of laissez-faire capitalism, even extended to the cultural and social sphere.
If you "suffered" at the "hands" of GR, read on