I think this is more about the inner world of a person who is losing their mind and feels profound isolation. A person who is looking for some answer, but all they get is an echo. We think that deep down the answers to life's problems can be found within us if we're honest with ourselves, meditate on things, etc etc, but for this person there's nothing inside, nothing distinct from the loneliness: "the echo police just don't know how."
I think this is more about the inner world of a person who is losing their mind and feels profound isolation. A person who is looking for some answer, but all they get is an echo. We think that deep down the answers to life's problems can be found within us if we're honest with ourselves, meditate on things, etc etc, but for this person there's nothing inside, nothing distinct from the loneliness: "the echo police just don't know how."