People call anything and everything "Nazi" in this day and age, but in this case it might be somewhat of a relevant comparison. We're not talking about the Na'vi here: the Aztec were some brutally cruel people.
Still, if I were looking to pre-contact America for life lessons, I would look at some more northerly tribes, first. But we don't know as much about what they thought.
The documented death rate of the inquisitions is on the order of 4500 people over 400 years [1]. That’s a rate of 11 people per year.
Aztec sacrifice estimates are on the scale of 20,000 to 250,000 per year. [2]
In actual fact, the Aztecs are in a far worse light than the Dominicans and Franciscans. The Nazi comparison is valid. There’s no society on earth that would end innocent life on that scale for another 500 years.
[1]: https://history.stackexchange.com/questions/39443/what-was-t...
[2]: https://en.wikipedia.org/wiki/Human_sacrifice_in_Aztec_cultu...
The Albigensians alone numbered more than 4500.