Plus, in all fairness, how old is the combustion engine in our cars? We have the same engine design (internal combustion) that has been around for 100 years. The only difference is refinements.
Isn't the same true of the 1911 design - newer metals, more optimized frame hole locations, tighter tolerances, new features, etc.
How many 'modern' guns are based on some variation of the Browning tilt barrels?
I now have four Kimbers. All have been flawless through thousands of rounds.