Have Army Soldier Common Tasks documents always been required to be destroyed to prevent distribution?

I was working on putting together a training binder for my unit. As NCO's develop short blocks of instruction on assigned warrior task training, I intended on gathering the relevant material (risk assessment, task conditions and standards, and CONOP) and putting them together in a folder that will then be put in a binder for future instructors to access as needed.

While reading through the tasks at ATN (Army Training Network). I noticed that almost every one of the common tasks have various Foreign Disclosure codes (fine, I am not instructing foreign participants).

But what puzzled me was almost all of them have the following statement:

"Destruction Notice: destroy by any method that will prevent disclosure of contents or reproduction of the document"

I take this to mean that I can't make copies of the material and store them in a binder, and I can't store electronic versions of the training material either.

I don't understand how this is different then grabbing the SMCT that almost any unit will have lying around or downloading a digital copy to have on hand for quick reference during pocket book or section time training.

Am I reading too much into the destruction statement?