Yes, exactly this. You want people who can’t see behind the simple facade. Because they are more likely to be easily fooled. You don’t want to work someone who is very sceptical or just moderately sceptical. In that time you could work through a bunch of people that can’t see behind this and pull out money from them.
Scammers want easy marks. Why wouldn’t someone make it easier for themselves by naturally filtering out people that can’t be easily fooled?
Truly the legend of the galactic heroes.