They are not stupid, mate.
From all aspects, to conclude they are stupid when they are scammers.
They are smart enough to take advantage of the opportunities available and they can even take action even though the chances of success are very small. For them (scammers) there is no consideration that his actions are something that can harm others because they only want money and keep trying to find new victims all the time. For them, money can be produced in various ways even from the results of fraud they succeed in committing and this is a misleading ideology.
Scammers can earn money from their scam 'efforts' but how they can safe what they earn from scam? Easy comes, easy goes. It is true for all, and scammers are not exception. When they easily earn money from scam, they will easily spend those earnings for stupid things. Some days later, they won't be able to earn a single cent and what kinda of endings waiting for them. Not good.
You can see from many football stars or athletics who ends their lives without money in pockets, despite of in their all time highs, they manage to earn millions of dolllars.
Victims are people who have had the bad luck of the efforts made by scammers, when someone has a concern about this then reminding one another is the most recommended and I thank the OP for sharing this information with the crypto community and I think your findings are worthy of appreciation.
Victims, if they are scammed the first time, we can sympathize with them but if they get scammed from time to time, please let me say they deserve what they lost. They lost not because they don't know risks and methods of scammers, they are only greedy and want to take risks with scammers.