Terry Pratchett and other fiction writers create their own worlds in which there is logical consistency.
YEC's too have their own fictional world, which totally ignores reality.
They claim their world is based on scripture, but any described world which jars with reality should tell us which world is fictional. The lovely thing about fictional worlds is that they exist in the mind only, and the mind is great at deceiving itself.
Jer 17:9
The heart is deceitful above all things, and desperately wicked: who can know it?
But the whole YEC community derives strength from the fact that each one likes the other's posts, no matter how much nonsense the other is speaking.
And the YEC community has its own quirks. They hate regular science, but are drawn like moths to the flame of their own intellectual destruction, by fringe science. Creation.com and other anti-science sites feed them with answers all contrary to mainstream science.
Reality is what keeps us real, but when you create an alternate reality, weaving together a web of scriptures with their dodgy interpretations, and dishing up this fantasy as the "righteous" interpretation of scripture, this cocktail of faulty theology blended with faulty theology is repulsive to both science and Christianity.
Reality tells us that light from the furthest galaxies is older than 6000 years.
Reality tells us that there is a whole geologic column of organisms and biomes which never lived concurrently, but consecutively.
Reality shows that in the geologic column, oldest organisms were there first, and these oldest food chains had predators. So death had entered the world at this point, where no humans were around.
The fossil record shows various iterations of hominids which predate Homo sapiens.
To YEC's, I say deal with it. You have a flawed exegesis. It's not reality which is flawed, its your heads in the sand which is creating the apparent darkness.
The Bible does not force one to believe in a 60000 year old cosmos.
God the Great Scientist has been creating and doing things long before your little 6000 year past. He has been making worlds, and creating biomes with amazing critters. And it does appear that He experiments with creatures like the ediacaran biota in the pre-Cambrian, and then just discards these models of life, settling for the creatures we see on earth today.
If the rocks and old light contradict one's interpretation of scripture, maybe the rocks and old light are telling us to re-examine our theology.