The FBI is interested in busting perverts in closets. That's often how they work their way up the "supply chain" when it comes to CSAM. Consumers lead them to distributors, who lead them to producers.
Do we really have to give the benefit of the doubt to the agency that was literally running one of the largest CSAM distribution outlets in the world for years as a honeypot?
Of course, that was 60 years ago.
Eg https://en.wikipedia.org/wiki/COINTELPRO
I guess "other forces were worse" can certainly be true, but then how low are we holding the bar?