Very interesting.
With family members, that is their own conscience and for them to decide. We will not tell them yes or no, that is on them themselves. If they feel you are being a bad influence on them, they may choose not to, either way they must decide we won't say one way or another. Based on what you told me it sounds like they may be taking things to an extreme, but that's their choice. I even mentioned they said they read something that if I didn't go to meetings anymore they were to treat me as an apostate and can't associate with me. He said whatever they think they read they misunderstood it or took it to an extreme, that again they wouldn't be told they can't associate with family.
That response is a lie. The Watchtower leaves no doubt when it says to shun family. It seems Bethel is concerned about bad PR and the service desk have come up with acceptable responses for phone calls/interviews.
However, I take your point that this is very useful information for d/f people with JW family. Try to get the JW family member to speak with Bethel, as that sort of response will put them at ease with having some communication.