This may be slightly off-topic but I feel like these kinds of development make "dark forest" hypotheses a little problematic. One assumes that most alien societ

This may be slightly off-topic but I feel like these kinds of development make "dark forest" hypotheses a little problematic. One assumes that most alien societies began in a state where they'd give evidence of their existence long before they gained the ability to construct a dark Dyson sphere or whatever could conceal their existence.