[Barrin92]

I think on the input side natural language is a pretty reasonable interface. For me the output side is much more problematic. Natural language makes search output so uniform not only can't you tell whether something's real or not, if it is you can't tell whether it came from the Encyclopedia Britannica or the Youtube comment section.

Taking the ability to discern sources yourself away turns me off from using these systems anywhere where that is relevant.

Also of course not outputting structured data greatly diminishes having AI systems interface with other traditional automated systems. Natural language is not a great format for processing or analysis of any kind.