It's always an illegitimate authority figure telling you what is "legal" and "illegal", "Good" and "Evil", whether you take it from a religion or from the government, it's exactly the same thing. If someone has to enforce what is "right" and "wrong", then it clearly has no objectivity and it is a matter of submission to an illegitimate higher power that tells you what to do. None of it remains objective in any sense, it's all completely subjective. Even if they put you behind bars (aka, "hell") and sentence you for something, it's still not objective. You're still under their superstition that comes from nobody but their own illegitimate authority.
It is indeed true that morality is an unfalsifiable claim when it is claimed that morality is something real or true, or objective. You can't prove morality in any way, only say that you take pleasure in some things and displeasure in others. These things have no objectivity to them.
You can call it subjective if that floats your boat.
If you are one of a group of 100 people, and your behaviour is unacceptable to 99 of them, then they will punish you. You can explain to them all you like that they are Bronze Age thinkers. It won’t help you. They don’t even need a church or government to slap you into line.
Just watch toddlers at play.
If you do something that causes you to feel shame, even if only you know about it, that is an internally generated punishment, just as dopamine is an internally generated reward.
No government or church required.
Those processes were not invented and somehow inserted into your genes by church or state.
What I have been talking about is the action of your own conscience. Which is a neurobiological function.
I fully expect you to tell me that conscience is a cultural artefact of no significance. I may be wrong.
Call that subjective if you like, but that is a very superficial view for the reasons I have given earlier, and which you assiduously avoided answering. You simply maintained a mantra of “Bronze Age thinking and subjectivity”.
That doesn’t even touch the notion of the unconscious drives that inform your ‘subjectivity’.
You seem to think that the superficial level of cognition trumps the neurophysiological structure which is a product of millions of years of evolution.
Your wetware isn’t ‘subjective’. It is the objective bedrock of your experience.