There’s nothing ridiculous about it whatsoever.
If you believe that the earth is young but you don’t also believe that the earth is flat and covered with a solid dome, you are applying two different standards to how you interpret the first chapter of Genesis.
Don’t believe me? Answers in Genesis published a takedown of flat earth arguments a couple of years ago, which can be turned into a takedown of young earth arguments by doing a simple find and replace of just five words.
So which is it? Is the earth young and flat, or ancient and a globe? Because trying to argue for anything else is trying to have your cake and eat it.