The fact that, ninety years later, (slightly) less outlandish scenarios can be imagined for the human species' Suicide By Robotics does not change the fact that

The fact that, ninety years later, (slightly) less outlandish scenarios can be imagined for the human species' Suicide By Robotics does not change the fact that the whole concept was originally a marginal offshoot of thinking about the proletarian revolution. Regarding the particular scenario you propose, natural selection is a much, much more complicated process than that. (Early 20th century racists would be right at home with this kind of simplistic argument, except they would substitute Aryans for AI and be happy about the forecast.) There is no a priori reason for intelligence, even if superior, to drive other forms of existence into extinction. After all, Nobel Prize winners are capable of peacefully co-existing with billions of people who can't understand a single equation from their work.