First off, he may have had no involvement with intelligence whatsoever, or beyond being interrogated after his arrest.
If the intelligence agencies did set all of this up and told him to get real underaged girls (rather than actors pretending to be underaged) to blackmail people, or knew this was happening and allowed it to continue for so long, that'd actually be big. That's state-sponsored child sex trafficking and rape. But there are so many other possibilities in between that and "no involvement".
If someone asked you right now "you have two options: topple a government and replace them with a puppet, or run a child sex trafficking ring", and you had to pick one, which would you choose? If I had to choose, I'd definitely choose the former.
The current head of the CIA is a torturer who illegally destroyed evidence. “Shifted a little” is awfully generous.
I think maybe your cynicism is misplaced. The world is a far uglier place than your comment presumes. And relative to the kinds of people intelligence agencies must deal with sometimes, Epstein's crimes and alleged crimes probably wouldn't raise an eyebrow. (Which isn't a comment on whether they were blackmail worthy.)