So, everytime your knives need cleaning or lubrication you send them back to the factory to have it done? No you don't because that is unreasonable. That would be a huge waste of time and money.
Nowhere did I say anything about sending knives back to their manufacturer for cleaning and lubricating. Quite the contrary. In post #14, which was a direct response to you, I clearly stated that Kershaw provides it's customers with instructions on how to clean and lubricate their folders.
Perhaps you are under the misconception that folders need to be disassembled in order to be cleaned and lubricated? People have been cleaning and lubricating folders for centuries without taking them apart, and they continue to do so now, and I'm sure they will continue to do so well into the future.
Several modern knife manufacturers, including Kershaw, Spyderco, Buck, Swiss Army Knives, etc, produce knives that are pinned together and cannot be taken apart by their owners. And yet, despite being unable to take them apart, people still buy them, use them for all manner of dirty tasks, clean and lube them, and then continue to use them without difficulty throughout their lives.
I have a Buck 110 that I've owned, and have been using, for over thirty years. It's had all manner of crud in it, including animal blood. I've never had any difficulty cleaning and lubricating it, and it still functions perfectly.
manufacturers know their knives will be disassembled by knife people.
That doesn't mean that they intend for customers to disassemble them, or that they advocate it, or that it won't violate their warranty. Some knife makers (like Chris Reeve) do advocate disassembling their knives, and even supply the necessary tools. But some knife makers (like Buck Knives) feel strongly that people shouldn't take their knives apart.
Manufacturers do know that people will take their knives apart. Which is probably the reason that many manufacturers include statements in their posted policies that disassembling their knives might void the warranty.
It probably wasn't the case this time but what if Derrik needed to "adjust" the pivot more than one turn? It sounds like that would have been impossible and according to your definition of manufacturers intent he should have been able to "adjust" it.
I guess people have different definitions of "adjust". If I buy a knife and the pivot is too tight, I loosen it a little. This doesn't require removal. In fact it requires less than half a turn of the screw.
And if the pivot loosens over time and use, I tighten it. But again, that requires less than half a turn, because I don't wait until my pivots become sloppy-loose.
And for the sake of full-disclosure, I occasionally disassemble my screwed folders (and modify them). But I do it carefully to avoid any damage. And I do it knowing that it might void the warranty. I consider those to be important factors whenever a person tinkers with a knife.