I think that's a good point about manufactured positivity, and it makes me wonder if the question I've asked is itself flawed.

I think your solution of promoting positivity to management positions carries its own concerns though, such as promoting naive yes-men, or "fronting" positivity so much that it becomes fake (for example, the "failure == success" bit from Silicon Valley HBO, if you're familiar https://m.youtube.com/watch?v=u3o8Cygx1EU)

That being said I still think you have an insightful response, thank you.