The prophetic perspective is much different than the sinner's. Nephi views their actions as a direct result of being seduced, enticed, and duped by the evil one. The sinner never sees things quite this way. Would the Nephites have admitted to being seduced, enticed, or duped? Rather, they would have declared that their actions were the result of their own minds, their independent thoughts, and their willful choices. This is all according to Satan's plan. He teaches that he does not exist, that God does not influence man, and that there is no consequence to sin. It is the great lie of secularism.
The prophets, on the other hand, have greater spiritual insight. They are able to recognize God's hand in all things. Conversely, they have a greater ability to recognize Satan's hand in encouraging every sinful act. If all good has a common source, so does all evil, and the prophets know it.