Yes. And he does this repeatedly. I don't know if he realizes that in the sense of Jesus personally, his death had to be unjust because he had to be innocent or he would have been unqualified to be the substitute. He takes one the main points of penal substitution and turns it on it's head as if that is what makes penal substitution invalid!
You seem to be operating under the assumption that the justice of God being satisfied in the death of the servant must be the same as the servant dying justly.
How is this not the exact claim of penal substitution? I just quoted a bunch of prominent penal substitution advocates who explicitly state that Jesus' death was just, that is, deserved. Yes penal substitution explicitly teaches that "the justice of God being satisfied in the death of the servant must be the same as the servant dying justly."
But in the Bible, Jesus suffers death unjustly, so that justice would enact the reversal of death in his resurrection. The resurrection is the divine reversal of the unjust human verdict.
You quote a bunch of guys who have varying views on the atonement.
I quote a bunch of guys who have varying views on the atonement, and who do not teach penal substitution. Caesarius is clear that Jesus died unjustly - that puts him out of the penal substitution camp, even if he does have an unbiblical "debt of death" view.
The central mechanism of my view of the atonement is not the defeat of Satan, nor is the defeat of Satan the central aspect of the "Christus Victor" view - that is a misunderstanding. The central aspect of my view of the atonement is that Jesus died in order to bring about the reversal of death by his resurrection. Jesus' death alone brings about the reversal of death because he alone died unjustly as a perfectly innocent party.
Sin is not just something that deserves punishment. Sin is destruction. It is decreation. It is disorder. If God never lifted a finger to punish sin, sin itself would still destroy sinners. Anyone who denies this has a low view of God and a low view of sin and and low view of God's creation. So the solution to the sin problem is something that will (1) destroy sin (2) and repair sin's destruction. Penal substitution does neither of these things. In my view, our sin is destroyed when we die with Christ, when it is condemned in the flesh (Romans 8:3) when our body of sin is done away with, and then sin's destruction is repaired in the resurrection.
Ephesians 2:1-10 is a perfect summary of my view. And notice that Ephesians 2:1-10 frames the problem and solution narrative completely differently than penal substitution.
Our sin is put on Jesus - We killed him. By our sins, we all contributed to the death of Christ.