I heard somewhere (I can’t remember where) that if people are put off by the grammar than they don’t usually fall for the scam. The people who aren’t put off by the grammar are more likely the fall for the scam.
Why waste time on people who won’t fall for the scam when you could easily separate them from people who are more likely to fall for the scam.
So it’s a way of weeding out the “dummies” from the “smarties”
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