If the death is on social media, why shouldn't the cause of it be? Why is death so taboo? I think people ask these questions as much about curiosity about death as wanting to know the details. Humans are wired for soap opera and story as much as we are life and death. I don't know why we get so sensitive about these things. Everyone dies, after all. And I'm not sure grieving families are reading the comments - they're too busy grieving.
You would hope they are at least. I have a feeling these days that isn't necessarily the case though! I get what you are saying and I don't disagree at all!