I agree. Being a Mod on Getbig is more abnormal than homosexuality. This thread has no bearings on public policy, discrimination laws, constitutional law, morality, social norms, etc. It is merely stating a (trivial) fact: (Very) few people are homosexuals.
He asked a simple a question. What he got in response was a Bill Clinton "it depends on what the definition of 'is' is." I think people who already have a certain mindset on the broader issue of GLBT etc. rights don't want to confront that very simple question, because they probably believe it will undermine their attempt to legitimize behavior.
The fact there are very few homosexuals in the human population isn't what makes the behavior abnormal. It's the act itself, whether it's done by 1 or 10 percent of the population.
Does this have a bearing on public policy? In reality, no, because the debate is over. We have already given GLBT etc. the same treatment as other "suspect classes" (race, religion, national origin, etc.), so it doesn't really matter anymore whether anyone thinks the behavior is normal or not. Society has turned the corner on this stuff. For example, you're going to see Republicans falling like dominoes on homosexual marriage.
But should it have a bearing? Probably, because other than religion, we have not given lifestyle choices the same protection as race, color, etc. Not saying lifestyle choices are not entitled to protection. Just that the analysis is different. Or at least it should be.
But like I said, moot point. Except for discussion boards.