The odds of every person in a position of authority in the DOJ, and all LEO agencies, being purveyors-for-profit of child porn is zero.
The odds that some of the highest ranking members of government are active in child abuse/porn, and are thus in a position to shut down any investigation that starts uncovering the rot, is ~99.9%. Otherwise, a few mos’ investigative effort that uncovered 5,200 felons would have exploded into by far the biggest scandal of our lives.
And... you are correct that is what is happening.