My words are not meaningless. You cannot fault my words so you resort to this generalization.
You comments that this device doesn’t do what it claims are meaningless. You don’t know that any more than I do. And thus your those comments are meaningless.
I could say that it definitively does work. And without testing that would also be meaningless. Until tests are run, whatever conclusion we come to is unproven.
If you need a translation, that means unscientific.