Holy crap, the writing is terrible.

Fina and Bruce: Oh look, these people lost their emotions. That means they do not react to danger!

No, you fucking turd munchers. Clearly these people didn't just lose their emotions. They lost all their intellect. The ability to recognize danger is a very basic cognitive ability, not an emotional response. Goddamn Spock buried his emotions but he still knew that a phaser to his face was something to be avoided.

If there's no loss of intellect, then these people are all just extremely depressed to the point of apathy towards their own well being. Which is the opposite of losing their emotions.