The open source info may well be 'classified' as a result of being in an intelligence product. Open source Intelligence (OSINT) comprises the bulk of intel products.
But, isn’t an OSINT Report designed to take OS info and “connect the dots”, providing ^likely^ conclusions? The conclusion itself and the “how” of connecting those dots would be classified, but NOT the OS info.
Example would be akin to our connecting the dots involved with ADD students, medication provided by a doctor with ties to INTEL staff, MKULtra, an axe to grind, and known cellphone fookaree that might be used to trigger.
Leading some to conclude a likely conclusion that the Parkland HS shooting was designed by our own INTEL and triggered when the situation seemed appropriate.
Now, instead of that conclusion being classified, it is dismissed as “conspiracy theory”.