"Just a minute, Cowboy Bob! We all know that 14C has nothing to do with the age of the Earth!"
For the most part, that is true. Uniformitarian scientists use long-term dating methods, test meteorites and select a result that best fits their presuppositions. It would be better for all if they were more scientific and actually examined their starting points.
Using uniformitarian assumptions, Carbon-14 should not exist in many items. But it does exist. People make excuses for it, including "contamination" and testing errors. (That casts aspersions on the labs doing the testing, and should undermine their confidence in the testing methods in general.) Actually, Carbon-14 is a serious threat to the idea of an ancient Earth, and far better supports creationist Flood geology.
I recommend that you finish reading "Rethinking Carbon-14 Dating: What Does It Really Tell Us about the Age of the Earth?"