That's not "more complex". That's the high school kind of "religion is absurd" reaction, and is a naive literal reading that even the people of the bible era were above.
The key is that there are no "rules that he himself also put in place" etc. (as he doesn't exist and even if he did it wouldn't matter). The rules were formed by people (obviously) and codify societal practices and philosophies towards morality and right. The story of Christ, as such, codifies a different approach contrary to those older practices -- which is why it was the basis on a whole different mentality that shaped Europe and ended in things like the "human rights" and modern ethics.
(Or course this can be difficult to fathom in places were Old Testament beliefs are still championed, along with very crude literal meanings of religion, in the name of "Christianity". But this wasn't the case in later Rome and Europe, not even in the Inquisition era).
The key is that there are no "rules that he himself also put in place" etc. (as he doesn't exist and even if he did it wouldn't matter). The rules were formed by people (obviously) and codify societal practices and philosophies towards morality and right. The story of Christ, as such, codifies a different approach contrary to those older practices -- which is why it was the basis on a whole different mentality that shaped Europe and ended in things like the "human rights" and modern ethics.
(Or course this can be difficult to fathom in places were Old Testament beliefs are still championed, along with very crude literal meanings of religion, in the name of "Christianity". But this wasn't the case in later Rome and Europe, not even in the Inquisition era).