Such men do not actually exist.

Just because you've never encountered them doesn't mean it's never happened.

This blue ball has 6 billion people on it. Surely at least 1 or 2 is "ex-gay" in the strict sense of the word.

I'd bet 9 times as many are "ex-straight."

There's probably a few "ex-pedos" and "ex-non-pedos" out there too, not even counting the millions of "pedos in their 20s" who be became "young-adult attracted old men" as their AOA just grew as they did.