There is a scene with the priestess that goes "wow i feel in a single thrust more pleasure than a dozen people's lifetimes worth".
That's not good writing. There is no real way for the reader to feel anything from that. It's like mathematically scaling "pleasure". If it's that good, show it in some other way.
A similar thing happened in another game and it was kind of an issue with the writers. A race of creatures had like 1000 clits in their vaginas, so all the writing was like "she cums 300 times at the same time because of her many clits" except nobody can really relate to such a concept.
I understand the game is fantastical to begin with but the fantasy part ought to be about interesting settings and situations, not just saying "lmao you cum moar". That doesn't actually make something sexier in reading.
Well, Cecille has no way of knowing. Where did she get the dozen figure? why not two dozen? dozen is a weird word to use, why not just a single lifetime?
I wanted the reader to ask those questions in their head.
The answer is that she felt that way because the curse is feeding her that knowledge, in that moment the curse was bragging to her so proudly and she was repeating it.
There is hint of this whenever her style of speech changes, like when Mars thinks she sounds like Helelle.
It's hard to have people wrap their minds around big numbers, it's like saying a billion. People blank out. I'm well aware of that but the real meaning in that scene in general is just a rundown of the changes that occurred in Cecille's body and how her way of thinking became linked with the curse.