These authors took on this study because, they said:
“… the relation between egg intake and health outcomes is still controversial.”
The only reason it’s still controversial is because the egg industry has sponsored studies that purport the relation is still controversial. It isn’t.
Eating eggs kills us sooner, as the following new study, among many others shows:
Egg Consumption And Risk Of All-Cause And Cause-Specific Mortality In An Italian Adult Population, European Journal of Nutrition, March 2021
They found that eating just 2-4 eggs a week increased risk for an early death from all causes, including cancer and heart disease. And just ONE egg a week increased mortality if someone had high blood pressure or high cholesterol.