Don't worry about, what a lot of the kimber bashers say all the time. They were some feeding issues when kimber went with the external extractor, but that stopped after they went back to the internal extractor.
Just shoot the gun and don't worry about it. For the amount that you are going to shoot thru the gun per year you shouldn't have any problems.
There are some ppl that will shoot 2000 to 3000 rounds per year out of a 45 by that is really excessive and they experience some failures with their guns at the 3000 plus round count and the guns start needing parts replacement or adjustment.
Most military service pistols are only rated at a 10,000 round life expectancy, after which they are returned to the armorer for evaluation and service.
PPl will also claim that the MIN parts that are used are junk, they are wrong, if the parts are made right they will hold up just as long as forged or cast parts.
So if you shoot your kimber and only fire the normal rate of about 500 rounds a year thru it , then you will have no problems.
The key thing to do is to fire you gun enough to make sure that it will function reliably and get familar with it to shoot it accurately.
If you want to blast a lot of rounds thru a pistol a good 22lr target auto is that way to go ruger mark 3 or browning buckmark.
When I buy a new carry gun I will fire at least 100 -150 rounds thru it and if it functions at least 98-99% then I will consider it fine for defense and carry use.
I will then clean the gun and use it for ccw, clean every 30 days and try and fire at least 50-100 round per year thru it to make sure it is still functioning fine. firing at least one full click thru the gun each month, this will use up the old carry ammo and also verify the guns function.