I like the saying:

Genetics loads the gun, environment pulls the trigger.

But I think in some cases, genetics unloads the gun. Which is why certain genetic groups can be so long lived despite things that kill the rest of us.

About the article, we're supposed to believe (from a bodybuilding website) that the reason for this paradox is because everyone who lived longer is because they're carrying way more muscle than regular fat people? That's quite the leap of faith and sounds like wishful thinking.