Earlier quoted context omitted.
It's common for researchers to publish a journal article in a more academic tone, then use it as a basis for legitimacy in public venues. This happens at both individual and institutional levels. Examples: 1.) At an individual level, someone might publish a study on a social issue that's important to them, adhering to relevant academic standards, then establish a popular identity as the author of that study. Afterwar…
Well, I'd be fine with Google putting its thumb on the scale in terms of how researchers engage in public press conferences/media releases/talk shows, etc. What we're discussing, however, is "striking a positive tone" in actual research papers.
Yeah.. that's what pretty much every academic does. Most talk up the merits of their work and the general importance of their field. The idea's to be constructive, always looking for avenues of improvement. For example, if you test a new medical treatment and it's not great, you don't trash it as a failure but rather focus on how it can be improved to get more positive results.
Though I'm starting to get the impression that you're reading "striking a positive tone" as meaning something other than what I'm seeing in those words. So to avoid talking past each other, what exactly are you seeing? And do you find it somehow problematic?