Yeah, if you're reduced to quoting Hillary, you might want to stop digging.I don’t want it “hidden”, I just don’t care about it. We know he did it, he wrote a paper about his desires to do something. We are not going to learn anything from it that will assist in preventing any future shootings.
Maybe a question could be, why do we want to read it? What will we do differently after reading it?
Maybe he/she was some beef with school admin and the paper is being held while that is investigated. Maybe he said something ugly about Biden or Trump.
To quote that famous lady. “At this point, what difference does it make?”
Simply put, we don't know what we don't know. Once we know, you may be right and you may be wrong, but I'll bet it proves that mental illness among school shooters isn't the far-right problem the media and some in .gov pretend it is. That's why they're hiding it and things being hidden from the public by a .gov for political purposes is NOT American.