As said above… yeah, there is some kind of range of players from cool with anything, to the sore winners that can’t even accept rewards graciously. What percentage of the MU* population each category represents… well there’s no way of really knowing that.
But I think there’s another fundamental issue, which is a frequent failure to come up with IC consequences that are entertaining. OR maybe more importantly, the misbelief that is common on MU*s that results from actions should be viewed through a punitive lens. “Oh. You tried to do something interesting? Let me figure out how I can mess with you as a result.”
If you try to do right by all players involved in the scenario, if you adjudicate the rules of the game fairly, and if you do your best to come up with narratively interesting results that don’t remove characters from the game (unless there’s really no other option), then YOU will be able to accept your own actions, regardless of whether or not another player can.