Well,

Another explanation is that not wanting the details of operations is based on complete lack of trust, not in the their competence but in the way they would describe things. The boss doesn't want the details because they are sure the details would make it seem like the underling did the right thing and moreover, monitoring that detail would just give the underling leverage over them.

The boss wants to know about changes to avoid this but whatever it is, they'll push back on its extent and won't want to hear about details then either.