This is a pretty sloppy recounting of what actually happened in the book. Garry Nolan (the Stanford biologist) doesn't say that the material violates laws of physics, but that he doesn't known how the various particular isotopes of metals could have been layered in the specific way that they were. He later concluded that that material could have been manufactured in a microgravity environment like low-earth orbit.

This account also makes Pasulka seem like a dupe for just believing such a bizarre conclusion (that Nolan doesn't actually draw in the book or elsewhere).

This is a bad bit of reasoning. That "edge of what technology allows you to do" is a horizon beyond which we have no depth perception. Anything beyond that horizon seems equally impossible. To put it more plainly:

Group A is 1,000 years more advanced than Group C. Group B is 100 years more advanced than Group C.

At a single glance by Group C, both A and B seem equally impossible, because everything that exists beyond the horizon of their own technological abilities just seems like magic.

So the fact that UAP always seem just beyond the horizon of our technological abilities isn't due to the fact that UAP are constantly adapting to be just one imagined step ahead of our current abilities. It's due to Asimov's law that any sufficiently advanced technology is indistinguishable from magic. And all magic, by its very nature, seems equally magical.

There's nothing in these three comments that well-informed members of the UAP research community would necessarily disagree with.

Certainly experimental US technology did contribute to the increase in reported sightings of UAP.

The claim that some UAP sightings are of scientifically unexplained phenomenon does not imply that the cause is alien life, or that any government has encountered aline life.

No one would deny that the vast majority of UAP sightings are of mundane, or at least scientifically-explicable objects or phenomena.