I don't think it's beside the point; I think it leads to the point. It contextualizes the point.

You are correct that either way, it leads to suffering. And you are correct to focus on remedying the behavior.

But proper remedies require proper diagnoses. The more we recognize trauma, inequality, and genetic and mental divergence as the real causes of "sin", the more we'll be able to suggest and develop real, truly effective solutions.

And so long as we hold onto the antiquated ideas of sin at all, we cloud our judgement with bias and prejudice, and limit our ability to provide effective remedies - and prolong the pain and suffering caused by all of our so-called sins.