I will repeat it again. He did not lose his citizenship. He lost his natural born status in the US. He then became a naturalized citizen. This would disqualify him from becoming POTUS.
Becoming a “naturalized” citizen would mean that he was, at one point, not a citizen - “naturalization” refers to the process by which citizenship is granted to a foreign citizen (who was not previously a citizen). One is either a natural born citizen at the time of one’s birth, or not. Subsequent events cannot cause someone to “lose his natural born status” and “become a naturalized citizen.”