If all black birds are ravens, then if a bird is black, by definition it is a raven.
If all homophobes are queer, then by definition all homophobia is enacted by people who are queer.
Therefore, the statement "every homophobe is a closeted queer person" automatically excludes all straight people from being capable of homophobia. The moment a straight person does something homophobic, they must, according to this line of thinking, actually be a closeted queer person.
And while the intent is to point out conservative hypocrisy, the effect, very subtly, is to craft a universe where straight people are absolved of any culpability for the existence of homophobia. It becomes, by definition, a queer problem.
I am not arguing against any of the things you seem to think I'm arguing against, nor am I making any of the points you seem to think I'm making. Everything in your previous comment is a response to an invention that exists solely in your head. I am making the point that I have just stated, as plainly as it is possible to state it. If you're still not getting it, sit back, have a cup of coffee, and read it again.