You have not seen my knives!!! Do I sharpen my knives, they ALL not sharp when they first arrive. I have to sharpen everyone of them. Mine is not exactly Cheap knives, at least 9Cr13MoV, D2 or N690 steel blade. My definition of sharp is cutting at least 10 layers of paper towel in a stack with slide motion of less than 1" slide travel. You touch it, it will cut. I am not those Forge In Fire making knives, but I do work on sharpening knives.
I agree, when I watch those videos how they disarm knives, how they do grappling with knives, to me, it's dangerous. It's more effective to just attack.