John Sidney McCain III would likely have wound up selling used cars but for the fact that his father and grandfather were admirals and THAT is a core fact!
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An opinion is emphatically not a fact.
What is a fact about John McCain is that he was an Annapolis graduate, a Naval Aviator,
a recipient of the Distinguished Flying Cross, the Bronze and Silver Stars plus 24 others,
as well as a Prisoner of War.
Did his Admiral Father/Grandfather 'aid' his career? Does 1+1 equal 2? Truth is direct and simple. Despite his lineage, McCain earned every academic level & award achieved, A FACT!
The assertion that except for them, he would have "wound up selling used cars" is more than an opinion, it's a slander contradicted by his military career.