Some things are, in fact, worth dismissing out of hand.
A basic premise of math & physics is: some things just don’t happen, and long ago we proved they don’t. Any new novel claims that such things do happen may be dismissed because we know, from proof, they don’t.
Some people just don’t grok the meaning of “proof”.
Out of the box, it had the sound of perpetual motion, something for nothing, but I’m not a scientist and the laws of thermodynamics are not burned into my memory, no pun intended.
Back when I was in higher ed, a certain individual was tinkering with Hydrogen power in automobiles, and the answer and technology were just about ready to go. That was over fifty years ago and despite fifty years it still is nowhere.