Discussions about artificial general or artificial super intelligence could easily be perceived as pointless (especially if the people talking about it don't have a background in science or engineering), but the potential dangers or benefits of artificial narrow intelligence are very real. The AI doesn't have to be general or super for it to change society in ways that can be positive or negative. It only has to be better than humans at specific tasks. Technological unemployment, bad code in self driving / flying vehicles, malicious programmers, these things are not pointless.