I thought it was clear that the process for creating the material is low yield, and the reaction produces other materials, so most of the material we're seeing

I thought it was clear that the process for creating the material is low yield, and the reaction produces other materials, so most of the material we're seeing is not LK-99. See the wiki section on synthesis: https://en.wikipedia.org/wiki/LK-99 https://en.wikipedia.org/wiki/LK-99 . Right now we don't have a good way to produce the material with better yield.