After watching that video, I was left with the impression that the guy who did it wants to believe, but isn't being intellectually honest here. He may be right, but not because of anything he said in that hour.
If it comes down to spiral striations in tube cores being impossible to recreate, all we need is clear evidence of spiral striations. So far, there appears to be only one such example, and nobody has been able to prove that the striations are indeed spiral. I would think there would be more examples of spiral striations, and that they would be more clear. Otherwise, I don't think there's any story here.
But like you asked (and it's weird that he didn't even mention it), are the cores tapered like cones? If so, that needs explanation.