Sounds like that person knows very little and wants to sound important for a podcast. Security clearances are taken very seriously, you can't just spitball about classified things you've seen.
My dad had classified knowledge from his time in the air force, and he wouldn't even discuss the category of information let alone give an overview of the contents, 50 years onward
Well, these records are special because of an act. Just because a President proactively blocked release does not promote them to a classification. But Mark Zaid on that podcast is a lawyer who specializes in people’s classification. There are many, many more people less qualified than him who are trying to sound important in this domain, like Roger Stone.
My dad had classified knowledge from his time in the air force, and he wouldn't even discuss the category of information let alone give an overview of the contents, 50 years onward