What Cosby did was a crime, although I guess maybe it wasn’t a crime because he’s not in jail. Maybe: what Cosby did was a crime at the time, and even now we can all agree that what he did was actually in itself heinous and despicable, as you say.
That said, what the Duggar clan did outside of Ashley Madison was (and hopefully still is) a crime - the sexual abuse of a minor and its subsequent coverup is disgusting.
But still, this reeks of schadenfreude-laced puritanism. “Oh, tee hee, he’s a sex-toy user… what a deviant”, we say to ourselves while clicking through to the next issue of Oh Joy Sex Toy on the same site.
I still contend that journalists have to consider the ethics of selective outing. Who gets to decide when a blatant violation of privacy should be amplified in the Public Interest - you all? Sure, fine. I just disagree with this call, as it smacks more of the Prurient Interest than the Public one.