Dark matter is incredibly hard to get. It requires significant investment in expensive electromagnets and particle accelerators, and has already been nerfed to require full 1g antimatter cells, in addition to only copying a single item instead of a stack as the mod originally intended.

Recently, kmecpp nerfed dark matter even further. Previously, 6 dark matter cells were able to create 8 items, and it has now been changed to require 6 dark matter cells for just 1 item. This is ridiculous, and should be changed back. If there are certain items kme is concerned about being used in assemblers, then he should specifically blacklist those items, and effectively make the entire system useless instead.

tldr; dark matter was nerfed, change it back to 8 items for 6 dark matter