I see it exactly the opposite way. There are numerous reasons why the true and happy finder would never want to disclose this information here in the forum, if this person is active here in the forum at all. I even claim that there are more logical reasons to hide it than to hang it on the big bell and supposedly brag about it.

This assumption can also be reflected analogously to a block find where a solo miner collects the reward but wants to remain anonymous. There are dozens of reasons for that.