The blames is on you because you trust so easily, there's some easy and safe way to do that but you prefer to use Telegram which is now the home of scammers, in the first place people have been warned of too many scammers lurking there you did not do an investigation before sending your money.
Yes, after reading the interchange between the OP and the second scammer, it was discussed to do the transaction through localbitcoins, but the OP wanted to save on fees. I hope that if there is a next time, the OP will just go through localbitcoins or use a trusted escrow. Paying the extra fees would have been well worth it. On the second transaction, I'm not sure what localbitcoins would have charged extra for the fees, but I'm sure it was really not that much.
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.