I agree it's weird. It's very possible that Oswald was involved in some shady (non-assassination related) business for the government, which in turn has made it

I agree it's weird. It's very possible that Oswald was involved in some shady (non-assassination related) business for the government, which in turn has made it more difficult to get documents declassified. But the "benefit of the doubt" isn't necessary here. The theory that CIA recruited Oswald specifically to assassinate JFK has been conclusively proven wrong. The magic bullet theory has been conclusively proven wrong. That the USSR had evidence that the CIA assassinated JFK has been conclusively proven wrong. This has been studied in tedious amount of detail.