If he found fucked up stuff regarding crimes way worse than his on university networks don't you think he could have gotten out of the sentencing entirely by cooperating against them

Epstein was relatively restrained even in his personal email, I doubt he was using MIT administrated systems to facilitate a pedo ring

Have you seen how the legal system is protecting everyone associated with those crimes, despite how high profile they are?

It's not that simple. If he did find dark stuff, and he got caught - he will have both the state murderers and the filth on his case. That's the best case scenario assuming the state isn't on the side of the filth by which case he was cooked no matter what he did. Filth does not even have come after you. They can just send you a family portrait and you'd know the hole is deep and only one way out.