from their standpoint, it is just too costly to stock certain type of specialty "tools" and in today's climate, it makes more sense to do it this way than not to.
plus, the limited ordering window creates a frenzied condition where common sense cannot coexist with the absolute and impending need to have the machined story stick and add it to the other invaluable anodized bits that have not left the shrine since you bought and hung them there. like the machined router bit holder just in case you don't have a vise. or the lumber gauge (leave your tape measure and calculator at home!)
i'm sure it's all been said before. along with the flurry of responses: "hey man, it's real simple, no need to complicate things: if you don't want it then don't buy it; just more for me...". followed of course by the requisite sign off: just my 2 cents, or better yet: in my HUMBLE opinion ....yeah....
good stuff...frenzy on baby!