Yes it is.
It says the President is the SOURCE of all classified doc authority.
That implies not just the authority to give copies to anyone he wants, including himself, but to ignore, rewrite, or deliberately violate any classified doc law he wants.
And of course that is intentional, since the whole point of classified docs is to share them with the right people.
If they never could be shared by anyone, then you might as well just burn them all.
And this specifically is stating the president is above and immune to all classified doc laws.
This is not like the normal source or law, which is inherent rights of individuals.
Then presidents are not the source authority at all, but the potential victims are.
So when a law is made against something, like murder, the person writing the law is not immune to it.
But with classified doc law, there is no inherent right as the source of authority.
It is totally arbitrary, and the president is the arbitrary source, so then IS ABOVE the law.