Yes, as per this explanation - unfortunately it may not be super trivial to copy that material out of drei, as it’s not encapsulated within a single file and relies on the react-three ecosystem (which could also be a good motivation to port it to vanilla-drei, if you have some spare time to do it - removing react and external dependencies to make it self-sustainable.)
I’d personally just try to understand the logic of the shader and write it as a vanilla ShaderMaterial, copy-pasting it may in fact be the more complex way of recreating the material in vanilla.