The flourishing Qi Luck of the human race is undeniably crucial for these Taoist Monarchs of human origin.
If Buddhism were allowed to grow unchecked, it would be akin to them parasitizing the human race, stealing its Qi Luck, which would ultimately harm themselves. Therefore, they would never permit it. This is precisely why Buddhism has faced collective suppression from numerous powerful figures since the establishment of the Heavenly Court.
Even for a religious sect as ruthless as the Demonic Way, they need the broad base of human life as a foundation. After all, even raising Gu requires numerous Gu worms, and the more Gu worms there are, the more exceptional ones can give birth to more powerful Gu Kings.
However, the reason Buddhism can stand in stark independence, yet also faces joint tacit exclusion from all sides, is precisely because of its unity and strength.
