This is obviously a staged photograph. I'm sure both the photographer and the GI were demonstrating the irony of having captured both the Germans and their weapons. I'm sure that this photograph was intended to be far more humorous when it was taken than we, 70 years later, are perceiving it.
Everyone is entitled to their opinion about this, but, as an officer in the U.S. Navy (and my father before me in the Pacific theatre) that actually had the 1911 strapped on his side in combat, I can attest, along with millions of other users, there is no finer weapon you'd want as a partner for protection. My father, upon returning from Okinawa and Iwo Jima, took only one weapon back -- his 1911 Colt.
In the original tests from 1911 (before WWI) this weapon fired 6000 rounds without a failure -- that's why it has been in service for so long. Plus, it fires 7 rounds, not just 6 from a revolver; reloads in mere seconds, and packs a punch.
John Browning was arguably the best automatic weapon designer that has ever lived. Everything from the 1903 or 1911 pistol, the BAR, the MaDeuce, or the A-5 shotgun to name a few, are the most reliable rapid fire designs ever produced. Even my little Colt Woodsman 22 is a superb work of art.