From the very start, I had already noticed a lizardman priest praying to his Snake God Voka. He had been constantly summoning Divine Arts. However, the lizardman priest simply wasn't important enough to worry about.
That was because the Malevolent Gods were foundationally different from the Order Gods. Chaos Gods were more primitive, relying more on themselves to obtain their divinity. They didn't believe as much in using the power of belief to power themselves up. The Chaos Gods also lacked any sense of responsibility towards their believers.