Speaking of observing the facts, the question of what cost is involved in effective forgiveness is worth considering . It is probably not an easy sum to figure, particularly in the context of real injury and not simple mistakes. Now I am sure torturing some poor innocent does not help real forgiveness but neither does that image fit the Christian belief in atonement. It is basic Christian belief that effective forgiveness is the bedrock of creating a world where honesty and charity are fundamental and effective values. I think it is an issue of the kinds of connections between people. Healed connection may grow to something stronger than the power of evil acts (which do in fact exert considerable power over people)
Nothing you said here comes even close to making the slightest bit of sense out the notion that a totally innocent being had to be tortured to death before God could forgive anyone for anything.
I don't think it is at all unreasonable to conclude, or at least strongly suspect, that the real purpose behind the doctrine of Christ's atonement is to intimidate the gullible and fearful into joining and contributing materially to some organized religion that teaches that doctrine. If (heaven forbid!) people get the idea in their heads that they can work out their own, individual accommodation with God without the ordinances and rites offered by organized religion, or using some religious authority figure or priest as a go-between, that greatly reduces the potential for extorting money from them.