They don't prove any such thing.
Of course they have, I suggest to google.
All they prove is that a bunch of questionable researchers claimed to measure a marginally significant effect
Your way of wording this is: libel.
What you consider marginal is your thing, others might disagree.
, and have been hyping the fuck out of it.
They don't. If they would you would know the names of the scientists and you and we would see them in TV regularly.
There actually is no hype.
Scientific openness is not equivalent credulously accepting the claims of every whacko and charlatain who makes a claim, just because it "hasn't been disproven".
How do you come to the idea that this is happening here?
We do know things about the world. Nothing is absolute in science, but some things come very, very close. Conservation of momentum is one of those.
Yes, it is. And the drive conserves momentum quite fine. Why do you claim it does not, when all the theories about how it works clearly state: it does???