And it takes a special kind of asshole to be a professional grave digger when his entire family will die and be buried. Same kind of illogical argument.
Nor a bartender is contributing to the death of people, even when they drink themselves to death. Let's see where is the personal responsibility of each of the people involved.
I saw this kind of logic trying to blame gun manufacturers, but it should extend to car sellers (there are many more deaths in traffic), knife sellers, soft drink sellers (diabetes kills), etc. No, they are not contributing to someone's death just because they sell them something that person uses and eventually die.