"I will believe the clear evidence of dose switching when somebody is proven guilty of dose switching. Is that crazy?" Yes, it is and it is illogical. By your standard a person who is shot twenty five times in the head isn't considered murdered unless someone is convicted of the murder!
The dose switching happened. There is no question about that. It was proven to the satisfaction of the FDA, the body that has jurisdiction over the issue. The only question is why did it happen and by whom!