I don’t think he is right.
But I am convinced some Liberal judge will decide he IS right if Cruz is elected.
The conventional wisdom is that it's more likely a conservative jurist -- one who takes an Originalist view of the Constitution and one more likely to adhere to SCOTUS precedent (Rogers v. Bellei; U.S. v. Wong Kim Ark) -- who would rule against Cruz. It's the more liberal judge -- one who sees an "evolving" Constitutional understanding or one who sees the NBC clause as an irrelevant historic relic -- who would tend to favor a Cruz candidacy.