>>106323787
I think it is because it came from someone they felt was on their side. Alot of the prior exits there was some known discord so when the slings and arrows were flung, they were mentally prepared and brushed them aside. Ike's exit was sudden and mysterious and seemingly people presumed it was mental health reasons in good faith and they he was still 'on their side'. So this time feels like an unexpected dagger in the back and thus their shocked, surprised, outraged reaction.
See picrel