...don't blame the victim (which is generally a good policy) because their benefit/risk estimation wasn't erroneous? I don't want to blame Jennifer Lawrence (as she seems to want to blame all those cursed with natural interests) but that she would've normally seen a benefit to her actions doesn't seem to directly address blame in any sense. Perhaps this ethical argument requires a simpler "ipso facto" tacked on the end for us stupid folks which are missing the connection between benefit and blame.
I don't think its so much about blame, thats something thats really being made up by the victims. Its not 'blame' to point out that what someone did was obviously dumb and risky behavior.
The problem there is theres this culture that says the world should be safe and people shouldn't have to take any precautions and just wander through life without having to be careful in any way, that people should have a right to be stupid and unobservant and careless.
Me, I take the opposite view; only danger can keep you safe from harm.