To me, it looks like you have some experience with the topic and believe that it is very hard to build something like the device in question, but which properties of the solution make you so certain?
I don't take advertising at face value, even if that advertising might appeal to sci-fi sensibilities. Your question has an air of "well you can't PROVE the flying spaghetti monster is false."
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...
Ours are indeed bold claims and we have updated some copies on the website to update our core value prop