Someone in that position should presumably have some skill with logic and numbers to simply do the job. It would be like someone in finance not understanding how the payout would work. How could they even do the job and not understand a lot of the basics involved?

That said, getting fleeced sucks and most likely it is similar to why people who know better fall for most scams - they think they can beat the system. They know it is false information but they think they are good enough to still come out ahead and the other sucker is going to take a hit. Sometimes they are right but most of the time they are the sucker.