That seems incorrect. The contemporary fine-art world, or certainly the public-gallery, taxpayer-funded side of it at least, has been dominated by conceptual art https://en.wikipedia.org/wiki/Conceptual_art for decades now: in other words, by people chasing heavily diminished returns on Duchamp's old hack. It's hard to imagine that the people adulating and spending millions on Damien Hirst's bisected shark and other, even slighter stuff are still upset about Duchamp.
