There might be some crossover between civilizations that take dark forest precautions and the type of civilization that doesn’t kill itself on accident.
Or it could be possible that a civilization pessimistic and risk-adverse enough make dark forest precautions a significant part of their culture wouldn't have the risk-taking needed to advance their technology to interstellar levels. Technological advancement and the possibility of self-destruction might go hand in hand.
Such a great trilogy! I hope we'll send out noticeable signals into space at some point down the line, and I wonder if our descendants in a few tens of thousands of years will look back on it as self-destructive hubris in the same way we look as burning coal now.
