Why does the threat of the atom bomb not seem so bad at the beginning of the video and gt?

At the beginning of the video, the threat of the atom bomb may not seem so dire due to a combination of factors, such as the novelty of nuclear technology and the perception that it is a powerful tool for peace and deterrence. Additionally, there might be a sense of optimism about scientific advancements and their potential to improve society. People may also be desensitized to the concept of warfare and the catastrophic implications of nuclear weapons, viewing them as abstract rather than immediate threats.