not sure if serious.
The Reapers don't kill ALL organic life (last time they only killed the Protheans and let lower organic life live (humans, salarians, hanar, asari etc.))
Where does it says he's destroying all organic life? It's a joke of the scumbag steve meme. His plan was basically to build killer robots that destroys advanced civilizations so they don't build killer robots that would kill them.