Doesn't this seem like science-fiction driven psyops? I am not a physicist or material scientist, so I would love to be corrected. Per my understanding, molecules from one end of the universe are the same as molecules from another end of the universe. I guess maybe they're doing some kind of element-wise dating or mass spectrometry, but again I am unsure how such an analysis would indicate non-Earth origins. What exactly is meant by "vehicle morphologies"? There are plenty of sci-fi designers who can dream up awesome, ridiculous vehicles that would seem like they're meant to be used by non-humans. I guess I am inclined to assume that these artifacts were placed by adversaries precisely for distracting with psyops.
Edit: iirc, these accounts seem inconsistent with Snowden's remark: https://www.cnn.com/2019/10/23/us/edward-snowden-joe-rogan-c...
Or I guess "hidden really well". I guess my question is why hide it? Is it really that big a deal?