The issue Josh skips in this piece is that the closet isn't just something that gay celebrities hide in, it's something that everybody in the news media actively barricades and camouflages for them.
Even celebrities are entitled to some privacy, especially the ones that don't milk the celebrity PR machine for the purposes of self-promotion, but if your gossip page is happy to report on all public heterosexual celebrity coupling activities, it should have a pretty good understanding why it doesn't do the same for gay coupling activities. The "open secret" - open among those in the know - perpetuates the notion that there's something more shameful and damaging about being gay than most of the other rather damaging tabloidy stuff that is published. That's increasingly an indefensible position.
