In an organization of high-minded individuals, the information asymmetry goes both ways, I've been a manager and a dev and I tried to be high-minded and do my best to smooth that assymetry for the greater good in both roles.
But sometimes, especially the last 3-4 years since it got tough, there's a lot of people trying to hold on by any means necessary. Information asymmetry isn't the problem there, it's incentive assymetry. What if you're just not that good at tech and got promoted to 1st, maybe 2nd level manager in the good years? What's your incentive?