That is exactly how it works. Someone posted the OP, I demonstrated the scripture was wrong, and you cried. Tough.
Matthew 12:24-26
King James Version (KJV)
24 But when the Pharisees heard it, they said, This fellow doth not cast out devils, but by Beelzebub the prince of the devils.
25 And Jesus knew their thoughts, and said unto them, Every kingdom divided against itself is brought to desolation; and every city or house divided against itself shall not stand:
26 And if Satan cast out Satan, he is divided against himself; how shall then his kingdom stand?
Nothing above says that Satan cannot cast out demons, thus the inference that demons can cast out demons is sound.
Jesus is saying that the wicked will struggle against itself, thus guaranteeing its failures.
That can also be applied to the far left, the far right, and the libertarians, that their inner struggles will lead to their political desolation.
Why then are you supporting an OP that is based on heresy, that the church should deny the man a funeral?