Why are they even talking about it possibly being a spacecraft? Even if it was (and likely is) a mundane natural object of interstellar origin it would be of great scientific value to find it.
"Maybe it's a meteorite, maybe it's an alien though... Or maybe it's Elvis flying on the Loch Ness monster."
The old quip that it's a small step from the sublime to the ridiculous applies here I think.
And sure, there is lots of crazy talk around the topic. But the fact we have people trying to invent perpetual motion machines does not make every thermodynamicist and machine engineer looney.
I've been to parts of New Jersey, and proving it's civilization, let alone sentience or any form of self-awareness may be eagerly disputable.
It’s still very unlikely, but it also raises interesting questions.
I think trying to retrieve it is a good idea, but I also get a whiff of motivated reasoning in most articles describing how unique it is.
It refuses to see aliens as a silly notion and therefore it is obvious to look for archeological evidence of aliens.
Its mass/robustness was weird (very high). Its speed was also weird beyond just being high, IIRC.
https://avi-loeb.medium.com/low-hanging-fruits-of-extraterre...