I'm not a big fan of this line of thinking, because it very quickly leads into "Every homophobe is a closeted homosexual", which is some genuinely insane levels of victim blaming when you actually think about it. Are we seriously going to suggest that queer people are to blame for our own oppression? And for that matter, if homophobia is only enacted by closeted queer people, then what made them closeted in the first place? In a world where no straight person is every homophobic, no queer person would ever have felt any shame about who they are.