I would like to hear arguments claiming that the 14th repealed article II. What are they going to say? That "Our citizens were natural before, but now they are even more natural!"?
Seriously, it is ridiculous to believe that you can change the meaning of "natural citizen" after the fact. "Natural Citizens" did not need the 14th amendment to be "natural citizens." (Minor v Happersett.)
And for what it's worth, a citizen with divided allegiance is not a "natural citizen." If you can be forced into another nation's army, you aren't the President we've been looking for.
so if some crazy nation has a consciption law that allows going 10 generations back it would disqualify someone?