I’m sure there are many who observed some things that had been questionable, but the corrupt actors at the top aren’t totally stupid. I have no doubt they kept these “projects” compartmentalized as much as possible.
Keep in mind that there many white hats at the FBI and our other intelligence agencies. The may have been watching this happen in horror and have made note of what they have seen for future ... uh reference.
This pursuit of the truth has happened much faster than I had anticipated and I suspect the white hats have been part of the reason. One year, and my expectation was 2 to 3 years.
If 99% of the FBI are ethical, honorable and trustworthy, why haven’t the rank and file FBI and their division chiefs/directors gone public to denounced their own corrupt leadership?