KrankysFirebrand48 they are a cult that originates from an ancient of death, destruction, bloodshed and madness and they are giant fleshy ships that mind control their crew and their blood temples need fresh untainted blood.
and they want to survive, and evolve.
and the hivemind isn't exactly a 'tyrant' but suit yourself i guess,you nor anyone else is going to kill the bloodcult CUZ THEY OP BRUH.
And trust me, Zaa is worse. and Sha is maybe a bit better if you consider what he considers tyranny and evil.
also they litterally explain the entire ''evil'' part with an old quote of theirs, 'stand against us and be the next to fuel our evolution...'
also the 'stand against us' part means factions and empires who see the cult as evil and a threat to the galaxy and wish to remove them.
the past galaxies they've been in wer eonly devoured because most of the galaxy's inhabitants worked 'against' the cult.
And they accept any and all allies who want to help in the war against the cult of Zaa'Thar, and factions like the kel'shir have been an old ally of the cult back when the cult war hadn't showe up yet.