It's never OK to threaten people's lives no matter what they do in a video game. Saying its the fault of someone who Ends the FATE early is just as absurd as telling them to cut their throat (Ive seen this said a few times). In conclusion - If you think this is OK because it ruined how much easier it was to get a second class to 50 then you are part of the problem and should have been reported along with those making the threats.