Good points moshe
People seldom see themselves as evil - no matter what they do. They act as they do because they believe they are right. Hypothetically, the devil does not see himself as evil but as standing up for the right of men and women, from Eden onward, to decide for themselves what is good and what is evil.
The devil is not alone in questioning the behaviour of the Hebrew desert god Jehovah. Despite the devil being called a liar in the Bible, I am unable to find a single incident of him lying. In contrast Jehovah told the first lie to Adam & Eve.
As Jehovah's Witnesses adore Jehovah they are going to act just like him and see themselves as righteous. Personally, I have more respect for the devil.