Lol, the documents are either marked classified or not - he’s not being prosecuted for having “dangerous” (whatever that means) files, he’s being prosecuted for possessing and improperly handling classified files and trying to hide evidence of this and refusing to turn them over when asked to do so.
The core of the alleged crime deals with documents that are classified, not the contents of the classified documents, it does not matter why the documents were classified, only that they are classified. Whether the documents should be classified or where to mundane to be classified in the first place is not something for the jury to consider and not what the prosecution is about; any suggestions to the contrary are smoke and mirrors meant to muddy public discourse.
All the jury needs to be able to verify about the documents possessed by Trump is whether they were marked classified or not, which is a matter of record and is generally denoted by the documents being marked as such.
The judge is being absolutely unreasonable here and the only benefit of the doubt she can be granted is that maybe she just doesn’t understand the law (which would be pretty much just as bad).