Untill the last 30 years the 1911 wasn't even close to being considered a reliable handgun.
Tell that to all of G.I.'s who served in WWI, WWII, the Korean War, and Vietnam. Their "unreliable" 1911's seemed to work just fine through frozen forests, muddy jungles, sandy beaches, and just about any other environment you can think of.
The opposite is true. The 1911 gained a reputation as unreliable within the last 30 years, due to the huge number manufacturer's who entered the market and thought they would "improve upon" the original specs.