Going by the Codex entry for Slicing, this statement is incorrect. It lists a benefit of giving schematics for Cybertech, as well as mission discoveries for all skills.
Recommended Crafting Skills: All (for mission discoveries), Cybertech (for tech schematics).
Not sure how rare those things are, but it is still something other than 'only used to make money'.
Yeah, I know. Really I shouldn't have even mentioned augments, as players do not take slicing for anything but one thing -- credits.
I might edit all the missions skills to be accurate though, I know I didn't say investigation gives schematics either.