Why are you assuming they did this purely for the ants' sake?
Maybe it was just a curiosity, or maybe they just have too much time on their hands, or maybe they wanted to prevent the bunker colony from getting any larger as it could attract other vermin being a food source. (they mention bats in TFA)
Also, how do you know someone's vegan? They tell you.
Maybe it was just a curiosity, or maybe they just have too much time on their hands, or maybe they wanted to prevent the bunker colony from getting any larger as it could attract other vermin being a food source. (they mention bats in TFA)
Also, how do you know someone's vegan? They tell you.