Hehe, that's hilariuous!
(And maybe it is a good thing he did not come across the priests dancing on the roof.)
Okay, firstly it's ridiculous! Secondly, does he know that PEOPLE make those sentences, not a computer?
And lastly, I don't care what anyone says, I'm using Duolingo, and that is that!
The entire video is obviously a joke, it's likely that he knows that it's a ridiculous hypothesis and that people make the sentences.