The reason its part of CRT is because its literally in the CRT lesson plan.
See, CRT is about looking at various cultures that have been impacted due to racism throughout history and how those impacts affect the culture today.
Part of the plan is about the Aztec and Mayan cultures, which were wiped out by Euopeans when they came to the area. The plan teaches parts of the culture, including prayers, to help students understand the now dead culture.
CRT also includes blacks and how the effects olfrom slavery persist today and how jews were and are affected by the holocaust.
All in all its not a bad curriculum. But assholes read a summary from someone who skimmed it, pick out words like Aztec prayer, and fill in the blanks with the worst thing they can imagine.
You can read the entire curriculum online from california's education website.