Really cool concept, but I think I played the bugged version? I played it like four times and didn't find a single incorrect passport, at which point it just came down to 'how fast can I stamp yes'
That is possible in both builds actually! The chance for an incorrect passport is 1 in 5, so getting a run where all the passports are correct is possible, and probably fairly likely. All an incorrect passport does is it swaps a detail with another one that exists so that it's incorrect.