Fallacious Bugliosi Argument #15.
This is yet another version of "I don't believe conspirators would do X, therefore there was no conspiracy". Bugliosi seems to have this idealized notion that these conspirators that he has invented are infallible. Like those Watergate conspirators who didn't do something stupid and get caught.
And by "so easily traceable", he means with an ID nobody ever said anything about until Oswald was dead, and unscientific handwriting "analysis" of a couple of block letters on a photo of a microfilm copy of a 2-inch order coupon.
Oh, yeah, and yellow blobs and moon craters.