Actually, I like this strategy and it probably works. It's a good strategy against pirated software too. If 90% of terrorist suppliers are really cia entrappers, terrorists are going to have a hard time coordinating anything that requires resources beyond 1 person. Entrapment requires lying. And if you have ready decided to lie to your own people, may as well use its full evil power on the adversary.
If you're justifying your program by spending its resources trying to goad people with mental handicaps and other lowest common denominator people into committing terrorism, what have you accomplished?
Any organization with a degree of security, one a nation would consider an adversary, is aware of the dangers agents pose with infiltration.
I know, that doesn't count and if anything it's basically entrapment, but hey... we have to justify the budget somehow.