If the beast mountain leaves the blazing inferno sect, they would be continuously attacked by the outside forces for its resources.
Moreover, even the blazing inferno sect might attack them.
So, they looked at their master, hoping he could reconsider his decision.
"A sect that wants to kill their own disciple for his blood just to increase their cultivation. Instead of being a subsidiary of such sect, it is better to leave the sect, and getting robbed by other sects is better."
As for the old man Fionk, he replied with a mocking look on his face.
Because a sect is like a family, and the family wants to kill its own child just to become a little stronger.
Even though many would do that, Old man Fionk would never do that to his beast mountain's disciples.