It is strange that King Yama speaks in terms of Buddha Dhamma as if he would know the Buddha Dhamma. Then he could have reached stream entry. King Yama would also not support the torture of others.
Also strange these hell wardens create very bad kamma for themself while punishing other beings.
Is the hell not a place where all those bad gathi gather and torture each other? So no one would be safe in hell because there are too many beings with hate.
A Quest to Recover Buddha's True Teachings