The video claims it's to help people who have lost the ability to speak. Can someone explain how this is supposed to work?

Because it looks more like, and is seemingly marketed as - if a video of Barack Obama saying things he hasn't said is typical - a way to make prank videos.

Edit: And why is it even called ObamaNet? Is it endorsed by the former president?

(I'm not making a political point here, I'd ask the same if it was TrumpNet or GagaNet. Is Obama notably connected with this kind of tech or research?)