Worthless or a stepping stone? The Platonic conception of knowledge is obvious nonsense today. I am, in my epistemology, superior to Plato. But it is named Platonic though I achieved the understanding of its flaws as a teenager. And even just for the conception of this epistemology, Plato is remembered. It is not known as Wiltordian epistemology after my teenage revelations.

That's because in many things in science and knowledge, being among the first to predict things wrong in an interesting manner is valuable.