Artistic qualities that once seemed undeniable don't seem so now. Sometimes these fluctuations are only fickleness of taste momentary glitches in an artist's work or an artist getting ahead of his audience (it took me ten years to catch up to Albert Oehlen). Other times however these problems mean there's something wrong with the art.
One of the embarrassing problems for the early nineteenth-century champions of the Christian faith was that not one of the first six Presidents of the United States was an orthodox Christian.