I think the plausibility is granted by the usage of the emotion intelligence model[1].
However, I agree with you that this is very thin ice. Given the selection of books used as decoration in the video, the authors seem to have more of a business background [2] than one of psychology.
I don't like calling someone a liar when no evidence is present (either way). I would rather say: 'Bold claims, can you prove it?'
[1]: https://github.com/StarmoonAI/Starmoon/blob/main/.env.exampl...