The comment is about somebody way past their last words: they would have died a long time ago, if not for this artificial prolongation of chemical process calle

The comment is about somebody way past their last words: they would have died a long time ago, if not for this artificial prolongation of chemical process called life. If people are allowed to die, they will have last words, and will then die when their body on its own is not able to sustain process of life.