I think that as with many things, the dork disk peaked, and has never recovered from the time when they decided to try to make them less visible by making them plastic. Was that when cassettes came into the mix?

I would love to put a nice shiny dork disk on my modern bikes, but all I can find for cassettes are the plastic ones, which look sub-par, especially once they get older and/or turn yellow.

I have never actually tried to put a vintage chromed one behind my cassette... maybe I will have to try that.