There are no ritual sacrifices being celebrating. Crucible is not a sacrifice. Aero would have to remain dead to qualify as a sacrifice, and this is all being done for her benefit, no one else's.
That's really not the case in the 80s stories. Wolverine alone is a grey anit-hero, and we have stuff like him nearly killing Rachel after she nearly murders Selene in cold blood, the previous example of Colossus killing Riptide (and earlier, Proteus), Betsy suggesting they kill Havok, Betsy using her telepathy to push everyone through the Siege Perilous without their consent, Storm making the dick move decision to fake the X-Men's deaths and let their loved ones grieve for nothing, not even bothering to let Kitty and Kurt know they were alive, even allowing Magneto on the team, etc.