Atheists who announce "I'm good without god"

[Abaddon_ire]

As I said, that most people have an inane sense of objective morality, makes me believe it’s true.

Did you mean "inane" or "inate"? I can't tell.

In fact it’s difficult not to behave as if morals are objective.

They are without a need for some deity. It is your failing that you are incapable of working that out. Nobody else's.