Read some obits. Cause of death is often not mentioned or is summed up in general categories. It's an obituary, not a crime report.
It's impossible for people to refer to death without offending people whose sensibilities are on hyper-alert. If people give them space, they complain about people staying away from them when they need them the most. If people don't give them space, they complain about the intrusion. Nobody knows how to bring up the death so as not to trigger the worst of their pain. Nothing is going to sit right with them when they are hurting. So, we talk as carefully as we can about 'passing on' and we never want to bring it up because it might be something they are managing not to dwell on at that moment. This is not offense given, it's just offense taken.