Such confusion clearly shows how stories can be come changed over the years.
If you wonder if a Biblical story could be changed over a span of (tens of) thousands of years of human memory, ask 12 people what happened at an event last week and you will get at least 6 different stories.
I agree completely. The remarkable thing about oral history is that any grain of truth at all remains in it.
A graph of the reported lifespans vs. the narrative timeline shows a roughly consistent level up to the Flood then an asymptotic decay. I thought these ignorant shepherds didn't like to play games with numbers.
Or play the kid's game "telephone"