I'm not saying Anakin is right. I'm saying he understands that Obi-Wan doesn't have the same perspective. Like I said, none of it is explored in the movies, but Anakin grew up around Jedi like Dooku, Pong Krell, Mace Windu, and Bariss Offee. He saw how the Jedi betrayed his padawan Ashoka. He felt his mother's suffering and was prohibited from saving her by the council. He was born a slave, rescued by a Jedi who cheated in a wager. Obi Wan possesses the physical high ground, but the moral high ground is much shakier from Anakin's point of view durr.

Anakin fell to the dark side. He chose to be merciless and violent. He had no empathy for sand people or jedi children. He is not righteous. But he didn't fall from high atop the mountain of morality. He was never all in on the Jedi code, the asceticism, the rejection of attachments and emotions, or the obedience to the wisdom of the council.