Operations Manuals have been turned into that exquisite tormentor's tool: the double bind.
Operators have no practical choice but to include provisions implementing the pet personal projects and opinions of the FOIs with which operators deal (and for whose time the operators pay), but CASA takes no responsibility for the content.
You are legally obliged to comply with "your" operations manual, even when its content is effectively dictated by someone who takes no responsibility for the content. But if you want your AOC ...