And yet clearly the existence of these apps has made the problem worse. People don't read disclaimers. And people do idiotic things. Now, for a mushroom identification app clearly the only functionality that actually matters is telling edible mushrooms from toxic ones.

How is it okay to make fundamentally broken software and then release/sell it as if it's functional? It shouldn't be, just like it isn't for architects, engineers(real ones) to design and build buildings that fall down and cars that explode.