There is even a research paper related to this phenomenon. Microsoft Research researched Nigerian scam e-mails. Turns out intentionally dumb messaging does help

There is even a research paper related to this phenomenon. Microsoft Research researched Nigerian scam e-mails. Turns out intentionally dumb messaging does help in filtering out targets that might be too smart to fall for the scam. https://www.microsoft.com/en-us/research/publication/why-do-nigerian-scammers-say-they-are-from-nigeria/ https://www.microsoft.com/en-us/research/publication/why-do-...