You and me both. I still regard this "Jon" as fake. Between this, and Bendis now on Justice League, I've pretty much cut out all Superman stuff.
American Education or not (not that I disagree there are massive issues with it), Jon still skipped out on years of education, and as you pointed out, socialization with his peers. Kara had Kryptonian education, and Conner could be explained by having the information pumped into his head during his early development. Jon? He had some elementary school and hung out either with Kathy, an alien refugee, or Damian, whom has his own social issues. And that was before Ultraman.