The statement was that anyone who send their kids to public schools is a total loser. A single counterexample is sufficient to counter a general rule.
In fact, in this city, the public schools are educationally superior, in terms of facilities, course offerings and quality of teachers, to the two private religious school, which are small and attract students almost entirely for religious and not educational reasons.
No, it's just the opposite. I single exception does not counter a general rule.
The Professor's World: "It's not insane to play Russian Roulette with a loaded gun because I did it once and am still alive".