A Nickel's worth of nickel is actually more than a nickel! Although modern US nickels are mostly copper. However, there's lots of Canadian nickels that are 100% nickel depending on the type.
Art is very subjective, although there are some universal standards of aesthetics that should always be upheld. In the art world, there's a lot of pretending - instead of "The emperor has no cloths on" it's "the artist has no talent." But nobody wants to speak up, once millions of dollars has been exchanged for the garbage!