The idiom “separate the art from the artist” actually means the opposite to that. It means that it doesn’t matter what the artist intended, if it caused offense then it is still offensive. Rather than, it doesn’t matter how much offensive stuff put into the art if I don’t find it offensive then it’s fine.
Tis the difference betwixt private and personal property, we don’t want your toothbrush but your toothbrush factory however…