One commonly used argument by Mormon apologists is that Joseph Smith must have been divinely inspired to write The Book of Mormon because how could a 24 year old farm boy ever write that book at such a tender age. Well, it's really not that good of a book in many, many respects. But that's neither here nor there. I think the truly insane claim is that nobody could accomplish anything extraordinary at such a young age. But that shows the blatant disregard of historical facts that you'd probably expect from hardcore Mormons.
Mozart wrote his first compositions at the age of 5. Bernini sculpted this at the age of 10.
Ernest Hemingway wrote The Sun Also Rises when he was in early 20s, and that is superior in every way to The Book of Mormon.
In more recent memory, the Beatles "conquered the world"-- before John Lennon and Ringo Starr (the two oldest members) were 24 (That is, Beatlemania had swept through the United States and the Beatles had performed on The Ed Sullivan Show). By the time Paul McCartney was 24 (1966), The Beatles were the biggest band in the world with dozens of #1 hits, two successful films, and he had already penned classics like Yesterday.