I don't get the mindset that thinks because someone is uncomfortable with something in a book that the publisher should select another picture. Well, let's back that up a little, because, like I said, context matters. For a game like D&D where the publishers want to attract a broad audience, it matters a whole lot. But not every publisher is trying to attract the broadest audience possible and it's okay to release something even knowing some people will find certain images uncomfortable.
It isn't just about the person reading the book. What if the people publishing it prefer that picture?