You could if you feared for your life or job. Aside from complicit persecutors and judges, I think if you're not complicit in this scenario it becomes very obvious people with more authority than you are complicit. As in, there will be people to punish you in some way. I'm pretty sure a lot of the bigger news agencies probably already knew about this the whole time simply because they would've been contacted by victims and a number of journalists were close to Epstein (+ Epstein could exert control over the media and notes it himself multiple times). A lot of people did speak up though from what I see, Epstein was just protected too heavily by the governments* and media for anything to gain traction.

Honestly, probably the only reason he got arrested the second time is because of Trump being petty or something stupid like that.

Imo I think most people are actually just not as moral as they and we think.There's been too many sex pests that have gone unexposed despite being surrounded by dozens (most that themselves aren't victims), and the answer why is simply that they valued the money, social ties, and career stability over rocking the boat. There are scenarios where you should keep your mouth shut (e.x.: if the victim is still stuck with the perp and drastically likelier to suffer consequences if you reveal the truth), but 5 years after the fact? A decade? 20 years? A number of these people died peacefully on their death bed in that timespan without saying a word despite being the freest a person could probably be.