I'm in a few trains of thoughts here
First up : It's predominantly not the individual JW we hold to account - unnless they were playing the double agent and deliberately messing around with sincere souls in which case it is despicable!
Second: It is the collective thought which we despise! And since no single person is accountable it falls upon those in authority within their ranks to take any criticisms - by default - and mainly those at the top claiming how god is the feeder of information they inflcit on peoples lives etc, etc,
Thirdly : the realisation that the WT does indeed impose certain 'personality disorders' on its followers which leave many of them ill prepared for life in society in general! And the experience of many is one where their personality is even further demolished with time when outside the WT. Many are seriously hurt and it gets worse before it ever feels like being human is worth getting up for each day!
So : who would not despise becoming such a crushed soul? Thanks to JW mindsurgery the inner self of each of us is in need of much love and repair which will likely never come along! So we go on but hate the idea of our certain knowledge the same will happen to ones now falling into their command!
Fourthly: Our seemingly harsh criticisms of their organisation are unnatural to our inner being - we do not enjoy the thoughts of foisting negatives on others but seeing what continues to happen is what enables us to maybe speak in ways we ordinarily despise of!