It's not an issue of theory-versus-practice. You're conflating the classification system, established by EO and therefore by definition controlled by the Execu

It's not an issue of theory-versus-practice. You're conflating the classification system, established by EO and therefore by definition controlled by the Executive, with the classified products of intel agencies. A particular POTUS's use (or lack thereof) of classified information has no bearing on the nature of the classification system.