But it is needed, unfortunately because people like you only focus on the scammers. I would compare it to incidents of rape. People LOVE getting all bent out of shape about "victim blaming", and while the perpetrator obviously holds guilt, the victim also has agency and needs to understand that certain behaviors put them at greater risk. Walking around in a dark alley in a city center in the middle of the night for example, while one has every right to do, is still risky behavior. We need to be teaching people how to avoid these dark alleys, not just decrying the evil deeds of the evil people who will always be there. Teach people how not to be victims, don't just give them a hug and send them back into that dark alley.
To address your analogy and this case, there are ways to give the victim constructive advise on how to be more secure going forward without resorting to call the victim stupid or some other harsh adjectives.
I did give constructive advice. I never called anyone stupid. The only time I ever even got close to that was using a well known saying to demonstrate that no matter how much you try to protect people, if they aren't doing due diligence they will always be robbed. I think you are letting your emotions get the better of you here just a LITTLE bit.