I'll point this out to you because it doesn't seem to be all that obvious but you're mistaking Cold Steel's advertizing with what their knives are made for and capable of.
Your argument would prohibit people who don't own dogs from buying cars that are advertized as good dog carriers.
Cold Steel folders are intended and designed for the same market as all Kershaws, all Byrds, many Spyderco's, a few Benchmades and lots of other brands. They have their own style and design (which marketing emphasizes) but they're solid rugged inexpensive folders that come in all sizes. Cold Steel folders are in no way, in no sense of the word 'niche' knives, or knives intended for a niche part of the market.
If I made some video's showing Kershaws and Spyderco's cutting through meat filled boots (which I'm sure they could do), would that change their intended market? Of course not. It might make them appeal to an audience that until then was not interested in them though, just as - apparently - it turns off other people that would otherwise be interested in Cold Steel. That would be their loss, by the way.
A karambit is a niche knife. A 4" clippoint folder is not.
Sorry, but you keep misconstruing the word "niche" to mean something small. It can mean something small, but it can also refer to strata in a market that can be any size. Any particular market stratum can be large in relation to other strata. Cold Steel -- like Kershaw -- appeals primarily to a particular price point in the folding knife market that happens to be large. That is their market niche, and they know it. So Cold Steel can have a few expensive folders like the Espada, and Kershaw can offer the Tilt. But when Kershaw wants to hit a more upscale market niche, it usually uses its ZT brand (like GM marketing both Chevys and Cadillacs). And you'll see in my earlier post that I didn't say Cold Steel was appealing to a different market niche than Kershaw; I just said it didn't have as large a product line (i.e, in folding knives).
You can try to HumptyDumpty the word "niche" as much as you want, but you are limiting that word incorrectly and repeatedly reading posts completely out of context.