And among those are also the ones with real influence and power to promote and/or enforce them.
This seems pretty reasonable, but once you start to get to know people a bit...
IQ tests are a single dimensional psychometric measurement tool that when if administered correctly only measures some attributes of what would be considered intelligence.
While those skills correlate to your ability to perform as a engineer it doesn't always translate to aptitude towards this sort of crime.
There are plenty of people who will score poorly in IQ tests but are "street smart". the good criminals (i.e. those have a long successful run or never get caught) are of this category.
For example Al Capone never got caught tied to any of his actual crimes, he had intimate understanding of the legal system and how not to get tied to evidence, he wouldn't score over 130 in IQ test probably
A smart n00b is still a n00b.
The overall general public? Sure.
People with STEM graduate degrees? Maybe not so much.