Sadly their marketing pitch does not convey an understanding of human interactions. The example you pointed out is reminiscent of a bad Turing test chat bot with a lexicon of topics to crawl through.

Still, the ability to dynamically generate a topical chat bot from a corpus of digital artifacts is interesting. I'm currently envisioning their work as a natural language parser front end with subject specific response decoration and a machine learning algorithm to trigger "self-initiated" conversation and topic selection.