To be blunt I think it is a distraction at present because it raises more questions than answers.
Then you have paid this work the highest compliment, and I thank you, for, to quote a favorite textbook of mine, "diligent scientific inquiry always raises more questions than it answers." That is a quotation worth re-reading. But surely you can't be serious about the distraction part. How can you dismiss the work on the jar as a distraction at the same time that you urge costly lab work to answer, and perhaps pose, additional questions regarding its provenance? It's an absolute conundrum, a state of favoring the research and opposing it at one and the same moment. And if it be a distraction, unworthy of further comment, why then do you, and I and others seem to continue to want to talk about it? 
Joe Cerniglia
TIGHAR #3078 ECR
In my opinion we tend to use "science" as a rather fuzzy and elastic concept on these pages. I suspect that your textbook was referring more to basic scientific research or inquiry, as in: "What the heck is gravity?" or "Is 'string theory' valid or a bunch of nonsense?". I don't really think a lot of that is going on here, or should be. Einstein would likely not have had much helpful insight about a pre-1918 glass jar. The order of the day is applied science: investigation into concrete
things according to scientific principles, aka forensic investigation.
Imagine the chief of an FBI laboratory coming in and asking, "OK, guys, what can you tell me about the origin of the murder bullet and the gun that fired it? It's our most critical evidence" And the reply coming back, "Chief, our
inquiry has been very
diligent and we're proud to say that we've managed to come up with 22 new
questions to ask
you about it." I don't think so. Even civil servants would get fired for that.
If I understand Dan Kelly, it is not hard to believe him serious. As long as even a (hypothetical)
fully-verified Berry's Freckle Jar still would have no verifiable connection to Amelia Earhart on her journey, and therefore would not be evidence of either her presence or absence on Niku, research into its identity can certainly be a distraction from other possible activities, if any are available, that would have a more direct bearing on the central question.
As to the posed "conundrum", I can't speak for Mr. Kelly, but I can understand it not as a conflict, but rather as opinions on two different levels. At the top level, the preference might be to look elsewhere altogether, because the jar research's marginal value is essentially nil. On a lower level, if others present jar findings or preliminary research or conclusions, it is still valid to have opinions on how those findings were reached and on the methodology of the research performed. In short: "maybe don't do it at all, but if you're
going to do it, here's a suggestion as to how to do it properly." I would not agree that if he considers the jar a "distraction", then he is instantly disqualified from any commentary on the work and opinions of others.