A clean carry weapon is a safe weapon in terms of reliability. I personally will not carry a weapon that is not cleaned on a regular basis. That is just me, everyone else has their own ideas on a weapon. I guess that my experience has taught me to keep a weapon in tip top shape. My life may depend on it one day and I do not want a malfunction due to a dirty weapon. Inconsistency is a problem when you do not clean a 1911, it is not an AR.
If you're addressing me, please understand that I only have 20 years of experience with 1911s, so I'm sort of a novice. The Kimber I mentioned above only has 12,250 rounds through it, so it's essentially new. The 9mm Springfield has 31,162 rounds fired, so it's almost broken-in.
In general, I have no interest in firearms that won't function indefinitely when they are dirty. However, that is only a state they will achieve if they function reliably otherwise. The problems I've had with 1911s have nothing to do with being clean or not clean. They've been a result of grossly out of spec parts in some cases, tolerance stacking in others, poorly fitted parts in others, and sometimes just mysterious problems that some of the most experienced and talented 1911 pistolsmiths in the country have been unable to remedy.
I keep the guns I carry relatively clean, but they are never unfired. Cleaning a gun and failing to test it by firing is not something I'm willing to do.
So, I stand by my assertion of inconsistency being the prime issue in 1911 malfunctions. For instance, I acquired two Rock Island/Armscor 1911A1 in 9mm. At first, one seemed to work well for the first few hundred rounds. The other worked for a couple of magazines, then went down hard. Upon examination, the differences between corresponding parts in the two guns were so dramatic that they were visible to the naked eye. For example, the extractor channel was located at least 1/16" offset from the extractor channel in the other. Those things happen more or less frequently based on manufacturer, but all of them show inconsistencies that are much more prevalent than what you'd see coming off of the lines at a Glock factory for example. This is why at least some hand fitting is necessary for all 1911s. In some cases, the collection parts work well together indefinitely. Sometimes they work okay until some burrs get worn away by use. Some will never work well together, and none of this has anything to do with being dirty or clean.