“However, when man sinned against God (Genesis 3), God cursed the ground and the animals, and He sentenced man to die (Genesis 2:17; 3:19). In essence, God withdrew some of His sustaining power and no longer completely upheld everything by His awesome power.”
In other words, the ‘fact’ that DNA decays with ongoing generations is NOT in the Bible but just made up to support a position.
If DNA decay were in the Bible then it would be wrong about that also.