Cruz is a member of the group of persons born “outside the geographical limits of the United States and its outlying possessions of parents one of whom is an alien, and the other a citizen of the United States....”
Cruz acquired citizenship via collective naturalization by 301(a)(7).
He was not “automatically” a citizen. Where do you get this notion?
You really don’t understand collective naturalization.
Ted Cruz is not a “collective”. He is an individual.
Citizens of a territory all of whom are addressed in the paragraphs of 301 are a collective.