I agree about the behavior of relativists, but I'm going to argue with you because I want to see more discussion.
If the objective truths are granular enough don't they change relative to the situation? Perhaps they change relative to the individual making the choice as well so that you can't make proper moral rules (the "correct moral code"). That would more or less still be relativism.
By changing relative to the individual, I mean: Say I'm having an excelent day and I'm super happy and I treat a cashier with bare politeness, not sharing my mood at all. I'm being pretty selfish, aren't I?
But say I'm having a bad day and I want to snap at everyone I meet, but I treat the cashier with bare politeness, not sharing my mood at all -- now I'm being kind. Eh?while every situation is different, an objective truth exists for that very specific situation