Simple. Confrontation sucks. As humans, we hate to confront others. If you’re uncomfortable with confrontation and aren’t sure how to get into the conversation, the first thing you’ll do is avoid having the conversation. We also avoid coaching conversations because we don’t want to rock the boat. We just want the person to get the work done without drama. Coaching feels like drama to most.
It sucks. I feel your pain. But you’re still responsible as a manager.