Don't blame the Watchtower. Blame the Bible.
Jesus treated epileptics and deaf people like they were demon possessed.
What about the cleansing of lepers. It sounds like any magic ritual.
Leviticus 14:49-53 (Read this like a line from Harry Potter)
New International Version (NIV)
49 To purify the house he is to take two birds and some cedar wood, scarlet yarn and hyssop. 50 He shall kill one of the birds over fresh water in a clay pot. 51 Then he is to take the cedar wood, the hyssop,the scarlet yarn and the live bird, dip them into the blood of the dead bird and the fresh water, and sprinkle the house seven times. 52 He shall purify the house with the bird’s blood, the fresh water, the live bird, the cedar wood, the hyssop and the scarlet yarn. 53 Then he is to release the live bird in the open fields outside the town. In this way he will make atonement for the house, and it will be clean.”
If you accept that as part of Jehovah's PERFECT LAW it can only go down hill from there.