I think the problem isn't with the published paper - it looks like they used a trained human interviewer and recorded both humans to evaluate their descriptors. The real problem is with the PR video, which looks really impressive, but seriously oversells the capabilities of the system. Not that the problem is unique to this situation - I think a lot of the videos in AI oversell the research. It's a pity, because the research is usually very good, but by itself isn't "exciting enough for general consumption," so they add bells and whistles that have nothing to do with the science.