These ideas (just like the "dark forest" concept by Liu Cixin) are based on the fact that every intelligent specie out there is driven exactly by the same insti

These ideas (just like the "dark forest" concept by Liu Cixin) are based on the fact that every intelligent specie out there is driven exactly by the same instincts as ours. It can be, but you cannot be certain until you meet them. Also, meeting other species might take millions of years, so at every effect we would be safe for a loooong time anyway.