More like...

Someone has signed the title to their car, had it stamped by a notary, then parked it in a public parking lot with the title and keys lying on top.

If you've published your private keys in a public space, you've given up everything that would constitute "ownership" when it comes to Bitcoin. It's irrelevant whether you've done this intentionally or accidentally. Archaic property rights laws simply can't apply to Bitcoin "ownership".

My signature is the only "rule" when it comes to Bitcoin "ownership".

That said, I don't believe the OP. I think he is simply trying to incite discussion.