You have such an animosity to PSA that no explanation will ever be accepted by you.
Yes, I do. The reason is I held that heresy for a ling time. But I also have an animosity for Jehovah Witnesses doctrine, Mormonism, Islam, any false doctrine. The reason is they carry people away from God.
I believe it is interesting to read how these theories came into being and how they reflect the thought process if the time.
The two most interesting are Substitution Theory and Penal Substitution Theory. Anselm sought to develop a theory that fit within his worldview and would appeal to the laity of his day. The focus on honor is a result of his worldview.
And then we have Calvin, a law student within the humanistic movement. He replaced honor with the ideas of that secular movement. "Every crime must be punished, punishment satisfies the law" became "every sin must be punished, punishment satisfies divine judgment". You can literally see the secular influences in their theology.
But both Medieval Chivalry and Renaissance humanism have passed. While we can understand both Anselm and Calvin reading Scriptute through their philosophies, it is odd that many read their philosophy into the biblical text.
You have shown why this topic is so important today by your inability to address your assumptions.
Biblically punishment is designed to arrive at justice. The criminal is punished in order to change the criminal or remove the criminal - both resulting in a righteous or just world.
At Judgment we see the same. The wicked will not enter the kingdom of God. They are unrighteous and God is righteous. Punishment will occur, resulting in the removal of evil (the wicked being cast out, cast into the outter darkness, cast into the lake of fire).
Biblically punishment is only on the wicked or wickedness as it serves a just purpose leading to righteousness.
Biblically punishment does not satisfy divine justice. It leads to divine justice (it removes the wicked or changes the wicked).
But you are saying that punishment itself serves no purpose at all. It is merely what judtice demands. Therefore anybody can suffer the punishment as long as the punishment is accomplished.
So you need to define divine justice.