Self-sufficiency

Nastika's don't need to eat
He sounded like a vegetarian at that moment. He can eat meat, but as he's already mentioned, he doesn't like seafood. He doesn't eat meat unless he has to. But nastikas don't have to eat anything, just like the gods... They usually starve and don't eat either vegetables or meat. If there is a nastika who likes to eat, he's not eating to survive, but just doing it for fun (or simply for the taste). That's why he is eating...

S2 E32 Afterword