Thing is they're usually getting robbed by the guilds. Imo they should be dropping like commendations - every players gets some.
Best way to get lots of stabs is to buy them. Do not buy anything beyond 150k, though. I got a good deal of 30 stabs for only 3.5 million. Got it today and almost doubled what i spent.
If they're gong to make them necessary in soooo many crafted wares (and soon to be needed in new spaceship parts???) , they need to have them drop more often from lower tier content