Yes, some 'went through a rough patch' and 'already moved past this', and are now dealing with a world of pain. But ask yourself, what makes you the authority on how much pain they should have endured for their mistake? As fate would have it, whatever 'moving past' they did will now be really put to the test. This will give some couples a second chance, to really ask themselves if all is forgiven.
Yes, some 'innocents' are hurting now. Some spouses, some children maybe too. Is this the fault of the hackers? I'd argue not. Ask yourself, if it weren't for the actions of the people cheating, could this have ever happened? Ashley Madison wouldn't even exist, and this hack would never have transpired, if it weren't for the liars, and cheaters, who made such a site possible. So should we be upset at the hackers, who exposed liars, and cheaters? Or should we be upset at the liars and cheaters, who thought they would get away with it? It's the liars, and the cheaters who hurt their family, not the hackers.