Maybe, but I think a lot of humans have a bloodthirsty taste for vengeance when they hear about someone committing an atrocity. In fact, I think the more difficult position is to be able to put that very common need for vengeance that so many people have aside because it isn’t ethical.
I personally have not had an issue with this, but I have said to more than one person that (for example) hoping a rapist will get raped in prison doesn’t make any sense from an ethical standpoint and getting them to understand that.