This sounds plausible - I grew up in the Midwestern US, and thus "vaguely passive-aggressive" is pretty much my native language. The hardest part of the job for me was remembering to communicate in an overtly aggressive manner when necessary, developing a habit of drawing a sharp line between "this is a debate" and "this is how it is."

Sometimes I put that line in the wrong place.

That said... I can't take credit for any major change in direction (or lack thereof) at SO. To the extent that SO succeeded, it did so because it collectively followed through on its mission while that was still something folks valued; to the extent that it has declined, it is because that mission is no longer valued. Plenty of other spaces with very different people, policies, general vibes... Have followed the same trajectory, both before SO and especially over the past few years.

With the benefits of hindsight, probably the only thing SO could have done that would have made a significant difference would have been to turn their Chat service into a hosted product in the manner of Discord - if that had happened in, say, 2012 there's a chance the Q&A portion of SO would have long ago become auxillary, and better able to weather being weaned from Google's feeding.

But even that is hardly assured. History is littered with the stories of ideas that were almost at the right place and time, but not quite. SO's Q&A was the best at what it set out to do for a very long time; surviving to the end of a market may have been the best it could have done.