When the scale and complexity of the systems you’re responsible for means there’s no way to fix all of the issues at once, you need a new toolkit.
There’s a beautiful simplicity to fixing bugs as a more junior engineer. You own a feature or a subsystem, people file bugs against it, and you hunker down and fix them.
Fast forward to working in a leadership role, whether it is as a Staff+ engineer or a manager, and things are less straightforward. There’s no simple hunkering down to fix the issues arising from the interactions of four different systems, two of which are controlled by third parties.