I'm one of them, but I don't think it was only a gay thing.
Those were the main superstars of the moment, Britney musically with an established success of all her albums-performances was the main pop girl of those years, Lindsay with movies was the youngest most paid actress (most of you still making quotes from 'Mean Girls'), Paris with her reality shows was the first "socialite" to make that kind of career ('The Simple Life' - 'My super BFF'), all were at the top in those years, the gp and media were obsessed with them as well, not only gays.
