Why did Prometheus say that engineers created aliens to destroy mankind?

1 human beings evolved after an engineer drank black water, which shows that human beings are a branch of an engineer's life.

Engineers realized that human beings might threaten their existence (the original biochemical man created by human beings destroyed the engineer's planet with black water), and this consciousness was proved to be correct.

The engineer's language can only be understood by biochemical people. When the engineer woke up, the old man asked the engineer why he couldn't live forever. The biochemical man said, tell the engineer, "You and I are gods, and God will not die." Bionics put him in the same position as an engineer, and the engineer became angry. "What are you, comparable to me?" The engineer unscrewed the biochemical head

Thirdly, engineers are right to destroy mankind, because this branch of human life is out of control and threatens the life of the engineer planet. Of course, from the engineer's point of view,

5 aliens are used to destroy human beings? Is this right? The first alien can't grow and reproduce normally without human beings, and the second human can't fight against a large number of aliens without "breaking his chest". So when aliens kill humans, aliens themselves cannot reproduce, but aliens will not live in peace with humans. Therefore, a large number of aliens on the human planet can only be a result, mutually assured destruction. There are still many alien eggs left,