The problem with that is Quimir clearly registers something in his head (based upon his facial expression) when Sol mentions that the witches used the Force/vergence to create life. The impression being that he knows what his master is capable of, and the pieces are starting to come together for him. All of the language and acting in that scene is hinting at the Tragedy of Darth Plagueis the Wise.

And while I do get what you’re saying about the focus being pulled from Mae when his cameo is shifted to the end, at least it explains why we don’t see anymore from those two characters going forward. If there is no looming/controlling threat above them, then we as the audience have to assume they get up to more dark side shenanigans leading to TPM without ever being discovered. This show already stretches the viewer’s suspension of disbelief quite a bit.