That literally only happened because the USSR and China would not and could not vote on it (respectively) because the UN was insisting that the KMT who only controlled taiwan were the legitimate representatives of china, and the USSR was boycotting the UN votes on principle.
The point isn’t “UN is infallible” the point is “Even anti-communist countries in the UN agreed that PRC is the legitimate government of all of China.”
That literally only happened because the USSR and China would not and could not vote on it (respectively) because the UN was insisting that the KMT who only controlled taiwan were the legitimate representatives of china, and the USSR was boycotting the UN votes on principle.
The point isn’t “UN is infallible” the point is “Even anti-communist countries in the UN agreed that PRC is the legitimate government of all of China.”