[AppyPappy]

That's nice but it has no bearing on what I said. We cannot say that gays die 20 years younger than straights because we have no idea who is gay when they die.

[John O]

We cannot say that gays die 20 years younger than straights because we have no idea who is gay when they die.

It's highly likely that if the obit was published in a 'gay' paper the deceased practiced homosexuality. While not a foolproof indicator it's certainly a highly reliable one.