Atheists who announce "I'm good without god"

[polymath257]

Most groups are composed of individuals. And most individuals prefer fair rules. That is enough for morality. When 'might' oppresses, people tend to get unhappy and overthrow it. That is simply asserting their moral authority.

The problem is that morality is all about how people interact with other people. it is *only* about that, not something independent of people.

Yes... so as you said... a thing isn’t right or wrong in itself, it’s just culturally taboo.  So then you can’t really judge another’s morality, or really even condemn them for being immoral.  Just state that you personally don’t like it.

Also, to add:   When you talk about asserting moral authority, that is only if they win. Otherwise, they might be immoral;  it all depends on whose point of view. But neither has a moral right to appeal to, outside of themselves.

But the point is that it isn't just one person's viewpoint. The vast majority of people agree on the basics, as I'm sure you agree. That is what keeps it from being arbitrary: the people still decide.