We would be totally unable to guarantee safety to other sentient beings when we have so many irrational people

I just watched last week’s episode of The Orville, and it touched on that very thing. The crew makes first contact with an alien race that is technologically comparable to 21st century Earth, and the irrational superstitious beliefs of the alien race soon puts several crew members lives in jeopardy. At the end of the episode, they get the hell off that planet and decide never to go back.