An Inert gas fire suppression system would ruin ROI for any Bitcoin mine but surely if you spent a few million on SP30's you'd buy a few $5 fire alarms and have a security guard?
I think it's an insurance scam but they forgot to buy any first.
You could fry an egg on top of an SP10 I certainty wouldn't put 2 on top of each other.
They have/had people on site.. But agreed, a fire alarm setup with linked firealarms would have been nice.. might have saved a lot of their gear.