What makes it utter nonsense?
Evidence indicates that the earth itself and the universe is very, very old. Older than 6,000 years.
This is not inconsistent with Scripture, which implies a “gap” of time between Genesis 1:1 and Genesis 1:2. The heavens and earth were created, and then they “became” without form and void, according to some biblical scholars. There very well could have been millions or billions of years in that “gap.”
But I don’t know for certain.
There are written Chinese documents at least 7,000 years old.
That’s just one reason.