I have heard this from several Witnesses.
The assert that it is insensitive to expose someone's faith as invalid without offering another more valid spiritual path.
"The Jehovah's Witnesses don't have the truth, because XYZ."
^ I have been accused of offering a disservice because I can't offer the answers to the questions that I am debunking as fradulent.
Has anyone else ran into this obscure argument?
-Sab