That's non sequitur. Using laws of physics that someone doesn't understand is not the same as violating them. If we don't understand all of the physical laws, then we can't say whether something violates them. But if they truly exceed all the laws of physics, they would have to be supernatural, as in, not bound by natural laws.

That was a key point I was making - if they adhere to the laws of physics, then someone figured it out. It was either humans or aliens, but someone had to gain that knowledge, and again, if the claim is aliens, then their existence has to be established before that can be a reasonable explanation, otherwise it's simply piling unknowns on top of unknowns.