No, I would never know a JW family to do that without having an ulterior motive like spreading their dogma.
As for the unwritten rule, I remember a Jewish person telling me a wise rule that will stick with me until the day I die. Jude a person or organization's Talmud more than you judge their Torah; which means "Don't judge people or a group by what they say they do or what they claim to do officially, but rather, look at their unwritten rules and see how they really treat people."
And Crumpet, those elders are assholes. I've seen a suicide funeral talk before. Even when they try to be compassionate, they end up sounding smug. I'm not suprised that they tried to DF you for suicide. It seems like something elders would do.