We can't trust AI systems built on deep learning alone

It has, and it will generate even more. But there are lots of problems that narrow AI just doesn't seem very capable of. Things like conversational natural-language understanding and general assistance in the virtual world, or things like Rosie the robot that might be able to help you tidy your home or cook you dinner. Those are just way outside of the scope of what we can do with narrow AI. It's also an interesting empirical question about whether narrow AI can get us to safe driverless cars. The reality so far is that narrow AI has a lot of problems with outlier cases, even for driving, which is a fairly constrained problem.