If the fentanyl is due to cross-contamination rather than deliberate adulteration test strips are unlikely to catch it without destroying an unacceptable amount of the product.
I've tried to get into Opera every year for over the past decade. While I admit that they introduced many innovative features, they could never get them "right" and their UI was always ugly and unpleasant to work with. If anything Opera should be suing this guy for that.
Based on his recipe I don't see how this is being perceived as novel or revolutionary. Surely many HNers have endeavored to make "bachelor chow" (or more appropriately slurry) in the past.