The Bitcoin analogy misses the point. Developers didn’t invent value exchange. they built on something real that already existed.
Same with morality, it’s not made up, it’s discovered. Every society shares core moral values, we judge by standards beyond our preference, and even relativists make absolute claims.
If morality were just human-made then Nazi morality would be valid if they had won. But we know that’s wrong, which means morality isn’t just opinion, it needs a higher foundation to draw from. Without it, morals become just another form of power struggle, which is exactly what’s happening in secular societies as they abandon religion in search of meaning that isn't there any more.
Friedrich Nietzsche was correct when he warned “God is dead, and we have killed him.”
It has moral conciseness that played out in the 20th century ending with millions dead because of "progress". If God is dead, what stops morality from becoming just another tool of control?