==They also believe the Earth is 6,000 - 10,000 years old...
And your point is????
Goes to the scientific knowledge, or lack their of, of one of your sources.
And your point is????
The point is that they have allowed their religious dogma to override vast and overwhelming mountains of multiply independent cross-confirming lines of evidence that the Earth is, in fact, billions of years old.
And if they can cheerfully trashcan 300+ years of vast amounts of scientific knowledge on as thoroughly settled an issue as the age of the Earth just because they think their reading of the Bible might say otherwise, then how in the heck can we trust them on the more complex stuff like biological origins?