That is a question I've pondered. I can understand the appeal of the specialist, for instance that guy in the video who had been forging blades all his long life and could forge a blade in one heat, there is something to be said for doing one thing and doing it very well. In the Japanese tradition, among others, one man forges, rough grinds, and heat-treats the blade, then sends it on to a polisher, who sends it on to a habaki maker, then the scabbard maker, etc... each craftsman a specialist and a damn good one at that. We American makers are an exception to the rule in this regard, and this is also a good thing. We come at it from a different perspective, seeing the whole knife as a unit, working on every detail of the piece and in some regards turning out a better knife in the process. It just takes longer to master the skills, working on each element that goes together to form the whole.
Then there are the makers who specialize in a certain style of knife, made a certain way, with a certain style. The maker who goes this route becomes very, very skilled at that one style, doing things that way. For myself, I want it all...

I want to be able to make a knife in every way there is to make a knife. For such a simple object there are an amazing number of ways to go about making one, and I want to try every method I can. Full-tang, through-tang, hidden-tang, rabbited tang, multi-blade folder, frame handle, claymore, katana, you name it, I want to be good at it. Life is just not long enough to do everything I want to, but I'll never get bored doing it this way.... This may not be the most logical or most efficient way to go about it, and I don't really care because I'm doing what I love.
That said, I seem to be becoming a specialist despite my best efforts. At least I can make something completely different every once in a while just to throw people off.
If I had to just crank out DP hunters day after day I'd go completely bonkers.
Exactly!