Not every JW is judgemental and critical
Right, but the organization, as run by the Governing Body, IS judgemental and critical. The elders are a direct product of this 'leadership,' hence they must become judgemental and critical. That can breed a mentality of distrust and gossip among the 'flock,' hence making THEM judgemental and critical.
But yeah, I've been one-on-one with JWs, during vacations, outings, sport events & such, where they've unplugged from the Borg, and I've found some genuinely decent people, once they let their defenses down.