>>97850493She killed like a whole star system as Dark Phoenix to "refuel", but then it's subsequently been confirmed that that Phoenix and its host are one entity, not one possessing another, and that this is an all-time deal, not from a certain point in time like with a symbiote taking over, and that the Phoenix is a fundamental cosmic power, and doesn't need to refuel.
So she murders this entire star system of billions of people and the Shi'Ar put her on trial, right, and the X-Men say THIS IS BULLSHIT and she kind of gets away with it because she dies instead of being executed...
... but then she comes back and it's revealed that the Jean who died wasn't her at all, except that she was, because of how the Phoenix works. Then the Shi'Ar come to Earth and murder her entire extended family just to be clear that Shit Is Not Tight Bro, and somehow the Shi'Ar, who are aliens whose god she stole and whose laws she has continually flouted, are the bad guys.
Like she doesn't even go to the Nova Corps or the Kree or any other defacto power of the universe that could arbitrate a peaceful solution, she just agitates the aliens she pissed all over in the first place, and she's still a murderer of billions of innocents for no reason. Fucking Jean Grey, man, not even once. And the rest of the X-Men, Cucklops in particular, can get fucked for siding with that shit.