[williamdclt]

A lot of people do consider it an iconic American landmark, but don't necessarily see it as a good thing.

In this particular case, for me the first things Hollywood sign evokes are "megalomania", "shitty blockbusters", "overinflated ego". I'm super biased (I don't even really know Hollywood history) and it doesn't necessarily make it the "most derided piece of art", but it wouldn't surprise me

[daveFNbuck]

It seems your criticism is about Hollywood's film industry rather than the sign as a piece of public art.