Most JWs are sincere I believe and genuinely want to please God and live a good life.
The only problem is they can't tell the difference.
They don't even know there is a difference.
That is until you ask them:
"Is a right and clean standing with God earned or imputed?"
They will most likely answer "earned" which is completely contrary to the "good news" according to Paul who spoke repeatedly about how a righteous status is a "free gift".
Using the Watchtower library (even online) it is easy to check this by searching for and underlining each occurrence of the words righteous and righteousness in Paul's letters.
As soon as someone really gets that they cannot earn, deserve or pay for a right and clean standing then the apostate, legalistic and moralistic ruling religious clergy class lose their hold and power over them.