Please Don't Tell Miss Witch That I'm Still Alive

"He is undoubtedly the greatest hero in the Holy War. He brought hope to the demons in a human body." ——This is what is recorded in "The Demon Tribe's Pan-Continental Epic - Final Chapter". In 1075 AD, the Supreme Command of the Human Alliance all fell on the Glow Plains, including the demon hero Pesir. Scholars of later generations said that this was the most brilliant strategy in his life: to exchange his own life for the chance of the demon clan's survival. … In 1382 AD, Pesir was sentenced to life imprisonment by the demons for fraud and molestation of the Demon King, and was imprisoned in the Demon King's palace. [Based on the above materials, please analyze the root cause of such a huge reversal in the historical evaluation of the hero Pesir, and discuss the possible logical connection between the "crime of molesting the demon king" and the "existence of the demon clan". (15 Points)]