I think if you recognize there are good and bad points in the witness organisation, you then have to concede that there are good and bad points in all Christian religions, such as those that do many charitable works to help those genuinely suffering. If God will overlook the negatives in the witness faith why not in other faiths? There are wheat and weeds everywhere, I've met a fair few nasty weeds in the jw org.
But the problem really comes to the fore when those negatives in an organisation amount to abuse. Such as :
allowing children to be raped under the cover of your religion through misapplication of the ancient 2 witness rule.
Or cutting off young people from their communities and families because they may be confused or have committed a 'sin', in many cases leading to depression, even suicide.
Or telling a battered wife that her situation isn't extreme enough for a separation and never for a divorce, telling her to forgive and be more submissive, sending her back into a potentially dangerous escalation of violence.
Or telling depressed, downtrodden and exhausted ones to just do more.
Or telling people they don't need an education, a career or a retirement plan, then mocking them in derision when they complain about that bad advice and its consequences.
or looking down on all non witnesses as 'worldly' ones, or is it 'amharets' as the Pharisees used to say and preaching death and destruction for 999 out of 1000, removing the love and mercy of christs message
or insisting people die when medical advances could save them, through misapplication of an ancient dietary law, when Jesus again and again emphasized the value of life (hence breaking gods law in curing on the sabbath)
or lying and concealing past mistakes and false prophecy, blaming almighty God for old light or their followers for misunderstanding ('75ers')
If we use the abuser analogy; Would you say because an abusive husband is kind at times and does good works that excuses him subjecting his wife and children to violence? That they should put up with the abuse for the sake of the good points? Or would you say they are right to seek peace and protection elsewhere?