If two cars are each three years old, but one has had twice as much gas consumption as the other, which would you expect to show more wear on its comppnents?
Caloric churn is putting the body's systems through their paces - at the very least for everything related to digestion. But really most of life is well described as pieces of a metabolic process.
This is such an oversimplification of complex biological processes that it borders on medieval superstition.
Should we similarly expect those who use their muscles more to be in worse condition than someone who doesn’t exercise?
Oxygen is a reactive species, that's how we do what we do. How we swim the thermodynamic eddies and flows across quadrillions of chemical reactions.
But burning that fuel is damaging.
Comparisons like this, while seeming to make sense using “common sense” rarely impart any value or scientific meaning. Maybe it works like that, maybe it doesn’t.
If as a result of less caloric consumption you’re starving your cells of needed nutrients, maybe that’s the one that degrades earlier.