If you are a sadist (no slur intended) you might want to inflict pain—but that would not make it “right”—in the eyes of conventional society.
Why would a sadistic Boltzmann brain conclude that it is wrong to be a sadistic Boltzmann brain? Whatever some society thinks is completely irrelevant to an agent with outlier preferences.
Why would a sadistic Boltzmann brain conclude that it is wrong to be a sadistic Boltzmann brain? Whatever some society thinks is completely irrelevant to an agent with outlier preferences.
Morality serves several functions:
It is a guide relating to what to do;
It is a guide relating to what behaviour to punish;
It allows for the signalling of goodness and virtue;
It allows agents to manipulate others, by labelling them or their actions as bad;
The lower items on the list have some significance, IMO.