The article starts with a straw man.
Finding dinosaur DNA is as unthinkable to an evolutionist as finding a flat earth would be to a geographer.
Surprising or exciting would be a better word to describe the the discovery of dinosaur DNA. Nobody believes it is theoretically impossible.
Then we see dishonest thinking on the part of the author (that is not surprising).
The moa research team measured the half-life of DNA to be 521 years under average local temperatures.5 After this time, only half of the amount of DNA present when the animal died should remain. And after another 521 years, only half of that remains, and so on until none is left. At this rate, DNA molecules in bone break down after only 10,000 years into tiny chemical segments too short for modern technology to sequence. And this result assumes preservation factors that optimize biochemical longevity.
DNA breakdown is a chemical reaction, not a radio-active one. Half life of a chemical process is always only approximate which means that in extreme circumstances it can be stretched almost indefinitely. Think about how quickly meat will go off if you leave it to in the open. It has a "half life" measured in hours. Now think about how long it will last if you put it in a freezer.
The other problem with this half life argument, of course , is that typically, the creationists fail to follow it through. If the Earth is only 6,000 years old and DNA has a "half life" of 521 years, that's only eleven or twelve half lives maximum. So how come most of the fossils we dig up have zero traces of DNA associated with them?
That's what is called an own goal.
