Sepsis occurs when inflammations goes from being localized to being spread throughout your entire body. The bacterial infection is obviously the root of the problem, but it's the inflammation that actually kills. Being able to turn off that severe systemic inflammation might buy doctors precious hours or even days to successfully treat the infection before the patient's critical organ system shut down for good.
As laypeople, should probably take a beat before saying statements made by experts and medical researchers are "meaningless."
From google:
>Sepsis is a highly inflammatory disorder with the presence of organ dysfunction in severe cases and mostly caused by bacterial infection (Bone et al., 1989).