Earlier quoted context omitted.
You, sir, are moralizing just as much as anyone else. This situation is not ethically clean-cut, despite how badly you want it to be. The website's existence itself is -- at the very best -- ethically and morally questionable. The hack, while technically illegal, is arguably a morally righteous act. You can't say that there is nothing ethically acceptable about sharing this data, when its very existence is ethically…
"The website's existence itself is -- at the very best -- ethically and morally questionable". I vehemently disagree with this statement. Why is it morally and ethically questionable to facilitate private individuals finding sexual partners? Perhaps it's questionable according to your moral code, but society is not run on your personal moral code, thankfully
Maybe you don't think it's inherently unethical to cheat on your partner. But it is certainly an act of questionable morality. In fact, it is literally illegal in many states: "Adultery isn't just a crime in the eyes of your spouse. In 21 states, cheating in a marriage is against the law, punishable by a fine or even jail time."
You, and all of the other moral relativists can tell me I'm an extremist, or a purist, but basically I just believe in justice. You cheat, you deserve to get caught. You run a site for cheaters, you deserve to get hacked.