The difference is in the immersion with the game. Finding a rare item to craft a powerful item is something I can accept, like having to find some optics or a special kind of steel or fabric. But having to find a schematic every time kinda breaks with the immersion as if I have first found the recipe for how to make something I will then know how to make said thing and will make it more than once and I do not understand why the recipe, and with it the knowledge of what you just did, goes poof with each craft.
And I do see your point, it is a VERY small thing and as AtomicUs5000 points out in the post below yours, it is probably just a label issue. And yes, I understand the work that goes into making such a change. I just hope that you also see my point and all I ask is that you consider it, even if it is just a relabel of the schematic to something that would make sense going poof with each craft