Any chance they reconsidered it at some point within the last 2000-ish years though?
You're right, these numbers should be updated.
Since the world population increased from roughly 200 million people on earth at the time these texts were written to closely 8 billion today, that's a roughly 40x increase in total population. So if we assume the same relative percentage, that's gonna be 6 million people to be saved in total. xD