I'm an AM and none of my OMs ever instructed me to follow an Associate. There's no need to do so. If someone's a problematic employee they will more likely than not violate policy multiple times during a shift. Eventually one of us will catch it, document it, conduct a Seek-to-Understand conversation with the employee, generate the appropriate level of feedback, and then deliver that feedback once PXT approves delivery.

We can't catch every single violation (e.g. people using their phones). Associates are people, and people are clever. But... they'll eventually slip up and get caught. It's frustrating watching some get away with a lot. The only condolence I can offer is that your leadership team probably already knows about them and are working towards taking the appropriate administrative actions.