Even though that's the case, what they're doing isn't novel. There are a number of syntheses for psilocybin that are well known in the literature that are potentially suitable for industrial production. In fact, there are a few available in Shulgin's famous TiHKAL. It seems quite unlikely to me that the synthesis they will be doing is novel or "disruptive" in any way.
I don't have a citation for you, but the mechanism here is that it's difficult to extract just the alkaloid you want when a plant has a number of chemically similar alkaloids. So when you do an extraction, you get a number of different compounds, often mixed in slightly different proportions.
