A DFS and a BFS both visit every (connected) node, haha.
I don’t think the original comment was saying that it is crucial for somebody to fill in for their reports (that might be true, but it is a different aspect). Rather, they were saying that the manager’s skill set must include the skill-set of the person being managed, in order to evaluate the latter.
I think there’s some truth to this, but there’s also obviously got to be some attenuation factor going on, otherwise we get this “visit every node” problem.
The suggestion of firing every manager that can’t run the test suite seems like it ignores this attenuation factor. It might be a set of command line scripts with funky in-house flags. But they should be able to draw some some of useful conclusions from the output IMO.