If one has moral certainty and a moral anti-realist position, one is deeply confused. As far as I see, moral certainty requires a commitment to moral realism.
More generally, the parent to my comment asserted moral anti-realism was an intellectual precursor to totalitarianism. Because I'm not aware of any totalitarian regime that wasn't a moral certainty regime (and therefore a moral realist regime), I am confused how a contrary philosophical position can be seen as a ideological precursor to totalitarianism.
If one has moral certainty and a moral anti-realist position, one is deeply confused.
It only seems that way to you because you've retained enough meta-moral realism to believe that there's something wrong with having an inconsistent about your position on morality.
From Being a Realist (even if you believe in God):
My mother, who doesn't call herself a theist (I think she's agnostic), doesn't even accept realism. She doesn't even agree with this:
That's little more than tautologies here. Yet it elicited an impression of being forced to believe. I know because she told me about the totalitarian dangers from such narrow thinking.
I'm happy to have finally found the root cause of our ongoing disagreement, but now, how can I deal with that? It looks pretty hopeless, but just in case, does someone have a suggestion, or should I just leave it at that? (My ego doesn't like it, but giving up is an option.)
Now I'm relieved to know that in near mode, she's a complete realist. This craziness only shows up in far mode.