CyanCat47 said:
i think the crystals are actually telling people that the corporation is evil so that their health potions don't remove the necessity of the crystals and deprive them of their status as gods or something like that
An interesting theory, but you seem to be forgetting that the corporation or whatever they are, just ordered their troops to burn down a building full of orphans. Also, since the soda pop seems to be made from crystals, they just might not want to be ground up and drank.
Not saying the crystal people couldn't be evil too (happened in FF12 after all), but I wouldn't discount corporation's evilness either.