"possibly they knew of the alleged offenders prior behavior and concealed it."
And what would this have to do with being responsible for abuse? People need to be careful and protect themselves regardless. Blaming them takes that responsibility off of the individuals.
" the governing body of JWs that set up the policies of the religion, including the two witness rule that regularly allows many sex abusers around the world, stay active, because there was only one witness to the abuse."
Why was there only one witness to the abuse?
The religion, like most others, teach against child abuse. Any abuse done is because individuals go against those teachings. This two witness rule is to promote truth in accusations. Seeking that truth does not make them responsible.