No. That doesn't logically follow.
Just because he had the authority to declassify the documents doesn't mean he actually did.
If he did, let's see him prove he did. If he thinks he did, but he has no proof that he did because he thinks he declassified them by some secret fiat that only he knows about, while he left the documents to be officially kept in their classified status as far as the offices of the government that keep records of that are concerned, then he's really an idiot and asked for everything that happened.
This is a picture-perfect recitation of the Biden FBI's view of the matter. It's a tempest in a teapot, ginned up for purely political purposes. But this is a perfect recitation of the party line.
Let's restate it in other terms: "A procedure wasn't followed!"
Big deal. Classification exists so that the executive (that's POTUS) can control information, not the other way around. The bureaucrats are just the gears-and-levers by which this machine operates, but it operates on behalf of POTUS. Until Jan 2020, that was Donald Trump, like it or not. Trump didn't get neuralyzed by a Men-in-Black neuralyzer when he left office so, guess what, all that "Top Secret Classified Info!!1!111" is still in his head. So the idea that classification is some kind of impenetrable barrier or wall that contains some kind of lake of information that "cannot leak" is downright silly. If there were some forms/procedures that the bureaucrats needed him to perform, that's just checkbox BS... even after leaving office. POTUS is not like any other inferior Federal official... he is in a class entirely his own. That's the whole point of having an executive: to place all the discretionary powers of the presidency into a
single individual, eliminating all of the bureaucratic and deliberative delays that necessarily come with a legislative body or a headless bureaucracy.
This is equally true of Clinton, Bush, Obama, etc. Every ex-President has had absolutely unrestricted access to
all classified info in the Executive. POTUS doesn't need to be read-in to a program... he's automatically read-in to all programs, because he's the root of classification authority. The witch-hunters are trying to treat Trump in the same category as a rogue ex-Department of Education head, or something, that has run off with "boxes of classified government documents". It's absurd, and they know it. This kind of BS has never before been stunted on an ex-POTUS, not because they don't have access to TS/SCI info (they all do, duh), but because it's what they've calculated is their best chance to get their licks in on Trump.
Purely political theater and nonsense. Pop up a bag of popcorn... this show's about to get good...