I don't really think that makes any difference to the point made.
The overall idea is that it is helpful for them to present an image that less gullible people will immediately write off as a scam, so as to reduce the responses to a set of people that are gullible enough to be profitable to pursue.
The ideal scenario for these people is to be busy all the time dealing with the most gullible potential victims rather than chasing people who will balk at sending them money. Any more responses than they can deal with, and they'd be better off filtering out more of the less gullible people by making their initial approach more likely to send poor targets running.
Presenting themselves as Nigerian is one way of increasing the odds of triggering alarm bells with the less gullible people, but by no means the only alternative.
There's also every reason to assume that a reasonable number of scammers are simply clueless and try these scams because they think they'll make money, not because they've actually found a method that is viable for them, so you'd expect to see a reasonable chunk of scammers that don't do the optimal thing anyway.
The overall idea is that it is helpful for them to present an image that less gullible people will immediately write off as a scam, so as to reduce the responses to a set of people that are gullible enough to be profitable to pursue.
The ideal scenario for these people is to be busy all the time dealing with the most gullible potential victims rather than chasing people who will balk at sending them money. Any more responses than they can deal with, and they'd be better off filtering out more of the less gullible people by making their initial approach more likely to send poor targets running.
Presenting themselves as Nigerian is one way of increasing the odds of triggering alarm bells with the less gullible people, but by no means the only alternative.
There's also every reason to assume that a reasonable number of scammers are simply clueless and try these scams because they think they'll make money, not because they've actually found a method that is viable for them, so you'd expect to see a reasonable chunk of scammers that don't do the optimal thing anyway.