The further you get from the front lines the less you have a grasp on day to day operations, especially when the job changes. Double that for leaders that never held technical positions, and come from other areas that guide their view on things.

Then you have the power imbalance with a hierarchy, if someone is responsible for your job you are more likely to just say “yes” to bad ideas than push back on them. Even when a manager is receptive to feedback that doesn’t mean the ICs are going to give the feedback, or they get demoralized when their ideas aren’t taken for valid reasons.