Damn right - and let's throw other victims of criminal activity under the bus too, while we're at it.
Unless you have access to some information that I don't about how this hack was perpetrated, we have no idea whether or not it was lax data security, a disgruntled employee, social engineering of a credulous employee, hacking into data backups somewhere, etc etc etc.
The hackers are the ones at fault here. Let's not forget that. First they stole the data, then they attempted to blackmail the organisation into closing down, and then they released the data, punishing - it should be remembered - not the ashley madison site (which I'd never even heard of before, so they're certainly getting some free publicity out of this) but the (largely innocent probably, perhaps guilty only of fantasy and poor judgement) users of the site.
I find it as entertaining as the next guy to see a Christian Right Wing blogger have his dirty laundry aired in public, but remember that the criminals in this situation are the hackers, not the hacked.