Still, this shows numbers, but not causation. They do not show how they know or what specifically is the cause in processed meats. These are numbers without meaning. I'm not saying that something in such foods does not cause problems, but I have not seen a peer reviewed study where people were only fed certain foods and their health monitored.
If there were things in such foods that increased mortality, then I would think the FDA would regulate them or restrict their use in foods.
There could be other things that actually caused the mortality increase, such as a poor overall diet, lifestyle choices, genetics, environmental factors, and other things I can think of. It isn't enough to say, "We studied ten million people". The focus would need to be more specific and other factors ruled out. However, a diet of regular consumption would be on my list of things not to do.
The animal sense of preservation with which most children are endowed told me that down that road lay ruin, so I would shut up and eat.
