It is funny that these theories of what other beings might be is conjured from our own imagination. Look at Blade Runner from 1980s with their big old computers where the film makers thought this must be in the future. Aliens with AI might not even be a thing. It might be totally inferior. Maybe it is pure consciousness or something we do not have the capacity to imagen. Also commonly mentioned in these themes, generalizing that aliens must travel at a given speed/method and must use radio. It is like hearing middle age people talking that foreigners must travel with a horse to get from A to B.