This article shows the biases of the author. The actual report makes no judgment that amounts to "shrugging", it concludes that the vast majority of observed phenomena have no explanation and asks for more funding for figuring them out.
A shrug literally means "I don't know". If the evidence is "largely inconclusive" that literally means "we don't know".
Where on earth are you finding bias in that?
Just prior to "The report amounts to a giant shrug" the article said, "Few in the Pentagon seem worried about extraterrestrial invaders." It is just as likely, if not more so, that the writer meant indifference and not "we don't know". We'll never know, however, since the word isn't clear from the context.
I'm thinking most analysis you might do has already been done, and probably wouldn't be too costly anyway? Basically showing it to experts and asking what they think?