About clamshells, and I don't like them either. People keep saying, "I want an American product!" I am with them. But Chinese labor is cheaper than dirt. Manufacturers are making American products competitive by taking out as much labor as possible. My guess is someone has built a machine that takes two reels of flat plastic and molds them just before assembly. So you have Buck knives, or whatever other product, coming down a line and just as it gets there "Plop, Plop" two halves are molded, the knife goes in and "Whoosh" it gets sealed. No American is needed to put it in the package.
Saw blades (like for circular saws and sabre saws and other types) came back to America from Asia a few years ago, always in blister packs or other easily automated packages. Knives are following them.
Why did the manufacturers invent those skeleton fixed blade knives that are all one piece of metal with no handle? "To make them lighter", they say. Nope. A big roll of steel gets laser cut into knives, ground on a machine, heat treated and then packaged, no human touches at all, after the setup is complete. "Made in America", and it is true. No labor.
I am not complaining, this is the end state of many repetitive jobs. Lamplighters got replaced by one guy with a master switch who got replaced by light sensing relays.
Theft prevention is another nice aspect of them, and the harder they are to open the better. Notice they are too big to slip into your pocket, even the ones that contain tiny knives? And anti-theft chips can be added by a machine.
That is my theory, anyway.