So you would prefer if armada and other ski companies didn't cater to the preferences of it's customers? They provide every different kind of freestyle/park ski you could want, what if armada only made the ar7 and the halo 2 for their park line-up. What happens when you want an all mountain application of the halo 2? or a softer more playful ar7? Or you want a wide buttery platform ski and there is no al dente only a arv-ti. The options exist because we want them to.
I agree with most of what you said but there's more to it than just marketing, its also supply and demand, do you think armada would keep those "redundant" skis if they didn't make money off of them?