system
A chat on subreddit /r/wallstreetbets
human
That's what tipped me off it was a bot though. 
  
 If it had said 
  
 'hello fellow retard, join my discord we've got free tendies. literally can't go tits up.' 
  
 I totally would've joined and been subsequently scammed by a nigerian prince.

gpt
You're right... for years the best way to avoid scams is to filter out those messages that obviously don't understand american english and culture.  
  
 I think there's a market for native english speakers with no conscience to disrupt.