It can actually work both ways. Imagine 100 new scammers start posting whatever they want on the internet. The ones who post with perfect English get lots of p

It can actually work both ways. Imagine 100 new scammers start posting whatever they want on the internet. The ones who post with perfect English get lots of people replying, but most of the victims realize it's a scam quickly. The ones who post with bad English get fewer people replying, but those who do are the most likely to fall for the scam. You have a lovely Darwinian scenario here in which the highest return on investment comes from those with lower skill levels.