No longer hiding
The expression "gay mafia" first went mainstream in 2002, when fallen super-agent Michael Ovitz gave an interview to Vanity Fair in which he claimed a cabal of the gay and vengeful were largely responsible for the demise of his management business.
His subsequent apology notwithstanding, most everyone around town saw it as some manifestation of Ovitz's unraveling egomania (after all, his list of names included known heterosexuals), though the phrase "gay mafia" had been kicking around Hollywood for years...