I don't doubt that there's some incriminating stuff in those files. Do I think there's a hard breakdown of charges and evidence in them? No. Because if Epstein was some crackpot who just claimed he had blackmail but actually had nothing, then they would have made it public or started a smear campaign and proved it.
But I think there are a lot of high profile people that are mentioned or noted in the documents or whatever and the Dems had the brains to go "shut the hell up and everyone will forget about it."
Trump went around thinking he had an advantage by going "see they're hiding something, I wouldn't do that, I'll release everything!" without thinking through that eventually he would have to reveal everything, and now that chicken is coming home to roost for him and he's looking like a fool.