No "evolutionist" today believes in Piltdown man.
Who uncovered the hoax? It was the "evolutionists", not the creationists.
Piltdown is evidence that the scientific method works.
So what if evolutionists exposed the hoax? It certainly took them long enough. That hoax stood for a long time before it was exposed. And archeoraptor was a hoax too. This argument is only trying to make evolutionists look like the heros out of embarrassment for what their collegues did. It's the same argument every time those two hoaxes are mentioned.