Context dependency:

"McCoy says there’s no one-size-fits-all method for applying mushrooms to biohazard sites. Reactions vary depending on species of mushroom, contaminants present, and local growing conditions, which means treatments must be customized and that further exploration is likely necessary." (https://thecounter.org/mycoremediation-radical-mycology-mushroom-natural-disaster-pollution-clean-up/)

No one size fits all - Poorly matched mycorrhizal species may do more harm to plants than good. Introducing opportunistic fungal species to new environments might displace local fungal strains with unknown ecological consequences. This one size fits all quick fix is easy to produce in the manufacturing facility. (Sheldrake)

Bad Business Case:

"“This is an inherent problem in the bioremediation industry,” says William Mohn, a microbiologist at the University of British Columbia who specializes in microbial degradation. “We are not producing a product that people want to buy. We are producing something that companies are sometimes forced to do. It’s hard to make a great business case for it. Or, quite frankly, a case for academic research.”

Too informal. Not scientific enough.

"In other words, a DIY spirit of informality pervades mycology culture, in part by disposition, and in part because there is no other choice. But if the movement is going to realize its potential, its loose community of adherents may need to find ways to formalize their work."