I don't think so. Although I read a lot of sci-fi stories in my youth (including Pohl's), I have the impression that this one was written more recently by someone whose name I've forgotten, but who wrote a number of what I thought of as...
I think those are more hypotheses than data. Triangulation, for example, rested on a heap of assumptions and seemed like something AI spat out without really understanding all the variables. Your continued insistence on its validity was, IIRC...
This is fixed. The problem was to do with a mismatch between Google's 3D tiles and the base elevation. The tiles are high resolution, and the position of this camera on a curving slope meant the camera though it was underground.
Indeed, a metal plate is a very good match. They also described the object as silvery. If they knew it was an aluminum plate, describing it that way would make perfect sense.
There's an interesting aspect of the case that is often overlooked by...