That would explain some cases. It does not explain the natural cause of external intelligence visiting this geography.
Numerically, it’s become more and more clear that by sheer magnitude of numbers, we are very likely far from alone as intelligent life in the galaxy let alone the universe.
The discoveries of similar solar systems looms larger and forces us to exit our anti-Galileo perspective.
It would be funny if the government would release some of this information if for no other reason than to distract from the financial crisis.