This is just another case of someone pulling a minority opinion that contradicted the majority and using it to accuse the President of dealing with the public in bad faith. Just as Saddam's nuclear program status was questioned in one footnote and the media make it sound like that overruled all the other agencies' opinions.
Yeah, I agree with the aspect of "at the time".
The issue seems to be, that even when the full technical results were known, much later, that they were suppressed.
Of course, anyone with any idea at all, of how a large bureaucracy works, knows that there still might not have been anyone at a high level who knew this.