Rather than add to what they wrote, I'd like to address a parallel issue. Once non-Christians started ridiculing Christianity as promoting a flat earth, some Christians sought to defend their faith by ... accepting a flat earth. The most prominent defender, in the mid-19th century, was Samuel Rowbotham, who wrote the book Zetetic Astronomy: Earth Not a Globe. Rowbotham compiled dozens of evidences supporting his claim that the earth was flat and stationary, such as lighthouses that could be seen from further away than they should if the surface is curved, cannonballs fired straight up from moving platforms (demonstrating that the earth is not moving), etc. To this day there is a flat-earth society which defends this kind of thing. Here is a list of flat-earth literature available to read online. A list of resources by and about flat-earthers is here.
I collect flat-earth literature. It seems to me to be an extreme example of Christians reacting to the conflict myth by letting secularists tell them what to believe, another example being contemporary defenses of geocentrism, something which has gained support among young-earth creationists.
That leads me to my main point: I think young-earth creationism is another example of Christians letting secularists define Christian belief. I don't think it's on the same level as belief in a flat-earth for the simple reason that, throughout history, many of the holiest Christians believed the earth and universe to be young. Nevertheless, the history of young-earth creationism in the last 50 years reveals it to be a reaction rather than a reasoned response, in a very similar fashion as belief in a flat earth was a reaction against the forces of secularism. I submit that this is not an appropriate way for a Christian to act. You can't love the Lord with all your mind if your theology is based on knee-jerk reactions. Moreover, it leads to two deplorable situations: first, as I've already mentioned, where the dictates of one's faith are actually made up by people trying to mock it. As I've mentioned before, I don't think it's wise to let those who deprecate our faith define it for us. Second, it creates a rather large stumbling block for belief in Christianity. If that's what you have to believe in order to be a Christian, then it just obviously fails the smell test.
There are plenty of parallels between young-earth and flat-earth literature. Both make their claim the linchpin to orthodoxy, so that disagreeing with them leads to the denial of central doctrines. Both locate the problems of contemporary society in the rejection of their claim. Both claim that the denial of their claim makes God into an incompetent Creator. Both claim that the denial of their claim is a purely recent phenomenon. Both explicate their claim via bluster and a feigned over-confidence. Etc.
To illustrate that last point, I have a flat-earth book entitled A Reparation: Universal Gravitation a Universal Fake by C. S. DeFord, originally published in 1931, that begins thus:
To me truth is precious. I love it. I embrace it at every opportunity. I do not stop to inquire, Is it popular? ere I embrace it. I inquire only, Is it truth? If my judgment is convinced my conscience approves and my will enforces my acceptance. I want truth for truth's sake, and not for the applaud or approval of men. I would not reject truth because it is unpopular, nor accept error because it is popular. I should rather be right and stand alone than to run with the multitude and be wrong.
Methinks he doth protest too much.
(cross-posted at Quodlibeta)