Very funny but sad example of doublespeak. It reinforces the observation made years ago by Paul Simon: "A man hears what he wants to hear and disregards the rest."

We had similar phrases when I was studying Philosophy: "it is self-evident that...", "it goes without saying that..."

I now work at one of the national laboratories, and I will say simultaneously that virtually all of the researchers I work with are very conscientious about their research and integrity, AND YET also there are cases where people contort themselves at times to get the data to say what they wish for it to say. (In fact, two different researchers whom I knew actively fudged their data, a VERY scandalous action.)
Scientists are only human, and in my layman's observation, their work has the typical blend of nobility and veniality.

"A new study has shown"=equals "everybody in the entire human race has known this from before the first mastodon hunt."

Examples: A new study has shown, sexually attractive women lower the average male's IQ.

A new study has shown, teenage females tend to be inordinately fond of expensive clothing items.

A new study has shown members of the armed services have a tendency toward alcoholism.

"Prior studies have shown" = My bias is.

"Incontrovertible" = You could be denied tenure for putting forth a different view.

"Clearly" = Here's where I try to convince you that my view is the only possible one, before you haves time to think of any alternatives.

"It merits further investigation, perhaps with a larger sample" = The results didn't fit my preconceived notions, so I'm going to keep trying.