There have been a number of deaths in recent years. Most of them are because of people flying dangerously. They fly much too close to themselves. Unfortunately that community can't seem to have a logical discussion about the issue. "He died doing what he loved. It was a freak accident. It wasn't his fault, don't blame the victim! Think of his family! "
Large helis are dangerous, and should be treated with respect. But large multirotors are also quite capable of killing you.