It's one thing to produce insulation, or bio-bricks from kiln dried mycelium, but to leave the mushroom mycelium alive seems like a hazard to both the occupants and surrounding building materials. Not only will the mushrooms release spores which can get into peoples lungs, clothing, furniture, etc. and then start consuming those materials, but the mycelium itself will continue to spread into any organic matter that it is in contact with.
This is already happening in many attics and walls. Also that's why new construction technology deeply focuses on airtightness. The airborne particles you are pointing out is symptom of bad building science, not a cause.
As for consumption of adjacent materials, near the end of the article the talk about how it can be triggered.
yeah like, imagine you build a 10 story apartment building, and one small portion of it has live mycelium that accidentally survived, or some weird manufacturing lemon/error... then 5 years later you have to tear down the building due to the mushroom infestation
