Good point; in similar vein you can also argue that Job was, indeed, proud exactly as his friends accused him. However, the seeming dichotomy of good and evil falls away only with accepting the world for what, and as, it is. It does not work the other way around. (Hence, you e.g. won't find "stop dividing phenomena on good and bad" in any "non-duality manual", acceptance as I described it is, however, universally present.)

Furthermore, enlightenment does not eradicate said dichotomy because our dualistic perceptual framework remains the same. Thus, causing pain or not accepting causality is still evil and unnatural, but only because they are tied to our (free) choices.

The absence of good and evil you describe is eerily reminiscent of the amoral "anything goes" attitudes which you can find in e.g. neo-advaita ("there's no one there so there's no one to suffer") or some strains of atheism and their notions of relativistic morality. Such people have no qualms to (strive to) be billionaires and cause suffering because, after all, there is no good and evil. It's just a matter of perspective, right?

Well, yes, in this universe literally anything goes, but causality still works. So, when you punch someone in the face or take their dinner they will feel it. Being unable (or unwilling) to distinguish between what is right and what is wrong does not entail enlightenment.