"Loma Linda residents have some of the highest lifespans in the world."
"Well it turns out they actually just have average lifespans."
"Only true Loma Linda residents have the highest lifespans."
If you discount everyone who died at a normal age, you can conclude that Loma Linda residents are doing something special.
Just kidding. But more seriously, the original claim was deeply flawed so it makes sense to challenge the criteria for the population study.
"Loma Linda residents have some of the highest lifespans in the world."
"Well it turns out they actually just have average lifespans."
"Only true Loma Linda residents have the highest lifespans."
If you discount everyone who died at a normal age, you can conclude that Loma Linda residents are doing something special.