This isn't saying yes or no to a supervillain working in a secret volcano lair. This is an arms race. If it's possible for a technology to exist it will exist. The only choice we have is who gets it first. Maybe that means we get destroyed by it first before it destroys everyone else, or maybe it's the reason we don't get destroyed.
Not only that, it's a blindered take on what human opinion is. Humans are killer apes AND cooperative, practically eusocial apes. Failing to understand both horns of that dilemma is a serious mistake.