I was reading homestuck again and have realized that Feferi cuts off Eridan right after her lusus dies(the vast glub occurs then that kills sollux). Which is also the exact point in time where she no longer needed Eridan to feed her lusus. She is also extremely uncaring about Eridan during that dumbing session as she just tells him to "clam up" and uses her fish puns while telling him he is the emotional equivelant of a trashcan. What are your thoughts on this?

Feferi didn’t dump Eridan ‘when her Lusus didn’t need to be fed any longer’, she dumped Eridan ‘when her entire race was Dead so all those Genocide Tendencies of his wouldn’t really matter that much anymore’.

A thing to take into account about Eridan being an Orphaner is that it’s a title. A job. Gl’bgolyb needs to be fed, and if it wasn’t Eridan, anyone else would take care of it, because that is an explicit requirement for the entire Troll Race to be kept alive. In fact, Eridan says how easy it’d be to not feed Gl’bgolyb as often, let her wipe out a few of the lower castes, but he doesn’t because of Feferi.

Yeah Eridan was a victim of his society and his caste’s views and the fucked upness of Alternia in general- But in the whole Feferi-Eridan ordeal when people want to criticize Feferi they often neglect both the explicit attempts by Eridan to wipe out the Land Dwellers, and the fact Feferi acts as a balancing force for him to not do that exactly.

Feferi dumps him because she’s not made to keep trying to prevent someone from becoming a mass murderer, because it takes an enormous emotional toll on her to the point that she can simply no longer deal with it anymore. And in fact she does offer to still be friends afterwards- Even looking past his views that heavily contradict her own and the tiring emotional theatrics, as long as she doesn’t have to romantically get involved with him she’s still fine with talking to him and being friendly to him.

So in the end? Remember that Feferi could’ve had literally any Troll in the entirety of the Alternian Empire help her feed her Lusus. But Eridan only sabotaged his easiest way to wipe out landwellers because of Feferi.

Additionally, it was ALSO easy for Eridan. He and Vriska did FLARP campaigns together often. Vriska needed the Trolls to feed her Lusus. Which left a bunch of Lusii without a Troll to take care of. Until he and Vriska fell apart, Lusii to feed Gl’bgolyb were basic spoils of battle derived from the brutal nature of FLARP, it’d barely even count as treasure, more like just casualties of an average campaign.