That's faulty. Barack only ever existed BECAUSE of Marxist theory. He was a bona fide walking and talking credential and a feather in her cap as a counter culturalist. When that novelty wore off, she ditched the kid.
The sad thing about this story...is that the mom basically dumps this kid....and continues on her life...as though she had no connection to the kid. You almost get the impression that she really didn’t care for him at all.