Actually I don't think Fox has ever been that far gone, but some of the people they have had on seem to believe such things.
It should be also noted that while I disagree with other Christians who believe in the whole "earth is only a few thousand years old" thing, I will point out that their argument is that as the devil is a great deceived parts of science and some of this evidence were created specifically to lead people to false conclusions. The argument basically being that if god could create earth, the second most powerful being in creation, while a pale shadow of god's power, could easily do things like this. After all we're pretty much dealing with what was once God's right hand and the greatest of all angels. The point here being that as much as people like to mock and point to their "evidence" it needs to be understood that you yourselves are not understanding the other side. Nobody who is a strict creationist is going to be "reduced to tears" by this due to being unable to refute the evidence, rather they are more likely to cry and pray for your soul due to you falling for the deception. I'm not deeply spiritual, and far more broad in my Christian beliefs, but I at least understand the arguments despite disagreeing with them and putting my faith in science for things like this (which I could get into but would get far off topic, and really discussing faith isn't my thing), it
is a rather internally consistent belief structure. Likewise as many people will point out science can't truly disprove god, after all when your dealing with a being that is basically omnipotent, who has an enemy which is only a couple of shades less omnipotent than he is, and even the fundamental building blocks of reality as we understand it could be an elaborate deception... well, it becomes hard to really argue with, that's what faith is all about.
That said, finding a really old rock doesn't excite me much, largely because I always understood the earth to be that truly ancient to begin with. Indeed I kind of assumed people already found and tested things that old already when using drills to collect geological samples deep in the crust and such.