If I can speculate: your perspective seems to be at least a second, maybe third-order perspective, of someone in an atypical environment surrounded by would-be stoics, who are all participating in order to succeed in e.g. middle management. This corporate stoicism produces suboptimal product results because while stoicism is perhaps necessary and valuable to hold a position, as you noted it is fundamentally detached and dishonest.

But until someone lives in your version of the social environment, they cannot see the relative value of a return to “radical candor” and so you get rejections, both from people behind you in their profession into stoic corporatism and from those who make their living from behaving in accord with it and believe they are superior for it.