(Reposted due to website formatting issues)
The Watchtower would never claim that they want child molesters in their congregations. No 'respectable' organization would. That doesn't mean they are doing anything to prevent it though. They have instead created a breeding ground for it through their policies.
Imagine you have a house. In that house are piles of waste and garbage are everywhere. You can put up signs and publicly declare that you are against rats, roaches and disease. You might say how horrible they are and even educate people on avoiding them. You might try to eliminate every pest you see but if you don't eliminate the source and clean house they will just keep coming back.