If the editor of the publication the article first appeared in is ethical — I make no such assumption, mind you — the author indeed is homosexual. When media publish anonymous essays, they are supposed to vet the authors to ensure that what they are revealing about themselves is accurate.
They should have included that in the form of an editor’s note. But then how could the editor know for certain that the person was indeed gay unless the editor has known the person for awhile, and has seen the person in a homosexual relationship.