I agree with you and Matt that science cannot be used to prove YEC. This is a standard belief of Orthodox YECism, which you can see emphasized by both Frs. Seraphim and Damascene in "Genesis, Creation, and Early Man."
Nevertheless, we shouldn't fall for the evolutionsts' trap of accusing YEC scientists of making up facts. They aren't making anyting up - they have their presuppositions that they begin with, which we disagree with, but they're not just fabricating stuff out of thin air. It's a question of a bad foundation. Same with the evolutionists -- they may be sincere as all get out, but it's a question of a bad foundation.