There are principles, humans are not good or evil but their actions are. The gods are not 'evil' but they tend to very specific characteristics of morality or nature. It is this lack of balance that might influence evil, or as their name goes, 'Chaos'.
About 'feedees', anything that does bad for your health is wrong, both scientifically and in terms of ethics. It is wrong to judge someone from how they look, but feedees are not about looks- it's about their pride in a clearly visible state of deteriorating health and dysfunctional physicality.