You may be giving the forger too much credit. Almost anyone, regardless of typing skills, can knock out a decent-looking document in MS Word, using default settings (as this doc used). The average user doesn't know much about fonts or spacing, only that the typefaces look somewhat similar. Heck, anyone below the age of 30 might not even know typewriters ever existed!
You assume that spaces were inserted intentionally to prevent superscript, but it could just as easily have been a typing error by someone with not much eye for detail.
Perhaps you, or anyone with a degree of intelligence/experience, would have paid much more attention to detail, such as aged paper, the use of a typewriter of that era, and conformity to military abbreviations, but suppose the originator never thought these documents would be publicly distributed (by the White House, no less) and thus would not subjected to the resulting scrutiny?
Dumb? Yes. An intentional strawman? Not necessarily.
Most political hacks are young folks, inexperienced and ignorant.
...but suppose the originator never thought these documents would be publicly distributed (by the White House, no less) and thus would not subjected to the resulting scrutiny?
Or posted on a web site?