@BugDemon
"Siiigh. No. No absolutely not. This is a fictional work, stereotypes more often than not apply. We have seen what a scatterbrain Sakura is, so I am basing it on how she acts.
Telling a kid to just wing it and that deadlines are stretchy like rubber and Momo's general impression of her tell us everything we need to know. She is ditz. To dork. ”
you know that idiocy is not the same as lack of common sense, right? Intelligence: https://en.wikipedia.org/wiki/Intelligence common sense: https://en.wikipedia.org/wiki/Common_sense
“Are you seriously going to use the excuse that Sakura was using Shamiko's brain here? Come on. ”
You said that Sakura had explained magic to Shamiko in the most complicated way possible, remember? "And explained magic to Shamiko in the most incomprehensible terms" I just put the link to remind you that she did the opposite, she look for the easiest way to explain it to Shamiko and she did it.
“She can't put it into simple terms and the entire joke in that damn chapter was that Sakura's teaching is like that of a genius who cant explain stuff to dumb people. Have some common sense yourself please. ”
What you are saying here is the opposite of what happened in the chapter. Sakura immediately recognized Shamiko's way of being (something she could not do if your sentence “geniuses tend to be eccentric and not understand the lesser people around them” apply here) and based on that he chose the best way to explain things to Shamiko and she did, she effectively instructed Shamiko on how to use her powers to reproduce the scene.
“Shirozawa manipulates Shamiko and others all the time.”
When? and Instead of sending me to see again the chapters, why you don't simply mention some examples? And even if Shirosawa was someone manipulative, being a manipulator does not make you someone without common sense.