No, this article does not. Eren doesn't loose humanity because he chases freedom, he denies his humanity by loosing his ability to choose or define himself. We are radically free means we exist and then we find our meaning. gods do not have this luxury; they are that they are, existing in the aspect of their dominion but for nothing else. First Eren behaves as if there is only one way to be free - this is seldom ever true. He then becomes a sort of god and this removes his radical freedom.

This seems to be a misunderstanding. This is an analysis from the viewpoint of existentialism. Chasing freedom is not what robbed him of humanity; fixating on one version of freedom he imagined in his mind is the beginning of bad faith. Furthermore, I find no justification for mass murder from a human moral standpoint. Removing human choice or agency intensionally is immoral. A god might gladly do such things and bé correct by his standards, but this is not the way of human beings.