I'm reminded of, "The Glass Bead Game," which discusses an academic society that forgets the names of contributors since they're all just part of the flow of humanity
In that context narratives end up glorifying endless minutiae.
https://www.cmu.edu/epp/people/faculty/research/Fischhoff-Fo...
But then we've invented and perfected writing, developed symbolic languages and notations (e.g. math, musical), long-duration storage media for text, and eventually networked digital computers. In terms of communicating and preserving knowledge, stories are pretty much the worst possible option you can choose.
We're comfortable with narratives because we didn't have anything else for hundreds of thousands of years. Stories are pretty much hardwired into our brains. But that doesn't make them the right choice, now that we've figured out much better alternatives.
More than that, I'm personally suspicious of stories being used in communication. There's no good reason to use them, and there's plenty of bad ones - it so happens that what makes a good story robust over time is the same thing you need to manipulate people into believing lies and shut off critical thinking.
As far as preserving information goes, no argument there. Stories aren’t a good way to preserve the truth of matters for future generations. To look and determine if the stories told have truth in them requires more detailed writing.
What has empirically brought more folks into careers in science, dry textbooks foisted by teachers or Star Trek? I'd argue Star Trek and science fiction more generally. You can chalk that up to human failings if you like, but inspiration is a need that can't be avoided if you wish to convince.
This is why a historian can read, understand (both the pros and the cons), and respect books that represent an economic history, a social history, an information history, a microhistory, and even a great-man history of a given subject without trouble.
More reason for engineers to take humanities courses!
Also, the more I learn about my heroes the more I realize that they never saw themselves as ubermensch. If anything, self doubt seems to be the common thread. I think this angle does not get enough attention.
However, I agree with you on a broader point. This is just one perspective. Here is another one: Turing the historical figure is necessarily oversold because many more people than Turing the real person contributed to his aggrandizement. Like all cultural icons, Turing the idea outlived and outshined Turing the man.
I think most of that reaction isn't coming from your narrative on history, it's from accusing other commenter's narratives of being false.