>>283264285
Yaotsu is an issue because he's totally willing to help Humans but is also childish and likes to monkey paw some of those wishes
You can't avoid Yaotsu either because eventually someone's going to get to a breaking point and search for salvation through a prayer and it was implied before that all he needs is one guy to start praying for Yaotsu to answer. It doesn't even necessarily need to be Yaotsu specifically that you pray too, just a "God" in general
Once he appears you can't get rid of him

>>283264316
It seems like Nyudo could have intervened if he wanted too, there doesn't seem to be much camaraderie between the Demon Lord's outside of what they "feel" is necessary