This is an interesting theory. The thing is that the asteroid Oumumua from another solar system also suggested being the alien probe. The fact is that nobody detects the signals from the Oumuamua anywhere, but if that thing is a probe, it could use something that we might call "old fashion". The fact is that no human ever landed on that asteroid. So there is space for the hypothesis. That theory about the Oumumua as the interstellar probe introduced some Harvard astronomers. There are theoretical models of what the alien probe might look like, how it might act, and how it might be undetected. In some visions, the alien probe uses nanotechnical mechanic computers. And if that probe is a so-called SETI probe the mission is to search the unknown intelligence, that probe will travel in the solar system by only its passive systems. So that probe remains stealth if it plays an asteroid. And the system might use stealth technology where the craft is covered by ice. The probe can u...
For finding solutions for problems, we must not claim that some proposition is right or wrong. All possibilities are open. Until they are proven right or wrong using empiric methods that are scientifically accepted.