Yes, the Dems requested they be sealed and the Dem judge approved it.

You cannot destroy evidence, ever? Who said they copied it aside from key high-raking Democrats? Every copy (since as you confirmed is classified! Thanks for that) would be carefully tracked. Controlled.
They just invent decoys and distractions to fill in any blanks. They made physical evidence in the RFK assassination vanish, Hunter's laptop vanished without any copies being made by the FBI. They can vanish the critical parts of the Epstein files in 4 years with the full permission of the President.

What other half is there? That no records of visitors to the island exist? Bills, phone trackers, passport stamps, nothing? Ample data existed once, is there any left today is the issue.
Maybe Trump is protecting people, (is that the other half? I've known that from the start, it's always been a possibility) but he's certainly not in it. As I say, our only hope at this point is that someone made copies and is brave enough to release them. Like Hunter's hard drive was.