Why Oswald instead of anyone else. I am a long way from well-read on Oswald but what I have garnered, is he was really an anti-social individual. How would someone like him possibly get information from any high-ranking person? It is hard to imagine someone with his nature being good at securing information. You have read a great deal more on this Russian subject than anyone I know. Does he really seem like a person who would be good at it? Granted this whole Russian defection seems strange but everything about him is strange. But that does not make him a spy, just odd.
According to John M. Newman's theory in his 2022 book, "Uncovering Popov's Mole," it wasn't Oswald's task to get information in the USSR, but to stimulate interest in himself (by declaring to the KGB's microphones hidden in Richard Snyder's office that he was going to tell them "something of special interest" pertaining to his work as a Marine radar operator) so that its moles could be ostensibly uncovered in the CIA, and to unwittingly do it in such a way that would ensure that the ensuing mole hunt would be in the wrong part of the Agency -- the Soviet Russia Division -- thereby protecting the mole who had sent him, Bruce Leonard Solie in the mole-hunting Office of Security.