This is, I'm finding, the most frustrating aspect about your writing (Assuming you actually write the story, I cannot keep track anymore). You get ideas in your head about how stuff MIGHT work, and then just go with it as if the rest of us already made that same assumption. Why is Shigaraki a misogynist in this story? Because the author thinks they would be based on their own imagination. Why can Momo suddenly create tools in a manner that she is never demonstrated to have done so? Because the author just assumes she could.
This is the sort of thing that requires explanation. You can't just lay it out and assume your audience will have followed the same logic you did.
Not writing, editing.
As for the Shigaraki question and why Momo can do this, I don't assume anything. It just doesn't fall into the realm of *impossibility* in my eyes so I do not object overmuch and you can ask both of the authors here, when I find something impossible, or even unlikely, I don't move on it or give the green light til its removed completely full stop. I have outright deleted *whole sections* of this story on numerous occasions. But just the same, if I wanted everything to be "exactly as canon" I'd go and read "canon" and stick with that.
This isn't canon. And that's fine.
Shigaraki being a mysoginist, no, we have no direct evidence of it but it wouldn't surprise me if he was. Given his obsession with games and how many gamers treat women they encounter on line it wouldn't surprise me. So when Zaru/IKN put that in there, I let it happen because a Fanfiction is about exploring a *possibility*. Its not canon, it doesn't have to be canon, it just has to be *possible* And from everything we've seen in canon, its not impossible.
Same thing with Momo in this instance. Is it *possible* for her to be capable of producing a blade in this manner? Yes. So that is enough for me to see where the two authors decide to expand on this. They are exploring a *possibility* A plausible one.
What you are describing is learning proper technique, which this is not. You are instead teaching her "Cock your fist back and then do a jig, try a few spins, and then throw the punch. It's really complicated so you'll get really good at it!"
That's *your* view of it. I do not share it, neither do the authors or other forum goers given that you're the one primarilly objecting to this particular issue.
Actual proper combat technique is about trimming away the fat. It's about eliminating unnecessary motions and economizing the application of power, torsion, leverage, impact. It's about taking all those extra steps involved in "Swing away Leeroy" that you didn't think were in there and getting rid of them so you can punch someone really efficiently. There's no efficiency in carrying around a sword handle and then producing a blade in a really really awkward fashion. You're burning in bad habits, not cultivating good ones.
Again, that's *your* interpretation. The way I see it Momo is learning:
A) To make an offensive weapon in the span of time it takes her hand to swing from the ready position, to the strike itself.
B) She is learning/practicing *How* to swing that same weapon with proper technique in the span of that time for a damaging cut
C) She is learning how to utilize her quirk from a *specific point* (the slit on the handle) and nothing but that point, isolating her usage which could potentially be a massive boon down the road in multiple situations.
And yes, she's using a sword handle, the same way a guy who wants to learn how to do a proper pull up would probably start with resistance band training NOT the pull up by himself. Or someone who wants to learn to ride a bike would use training wheels. I highly doubt she'll be keeping that sword handle forever as you imply. But for now, the speed of the blade creation is paramount, eliminating the handle from her mind eliminates that particular distraction.
As I said. That's *your* interpretation. Mine and others varies greatly.
And, you know. You're basically having her practice a single motion which she will never use in any practical scenario, and then imagining that it will somehow make her better at doing other, unrelated motions. As if learning how to dance-punch someone will somehow make her really effective at wrestling. You can't generalize practice in that way.
Its not entirely useless either.
If I know my swing speed in that motion is say .7 seconds and I master creating the blade in that time then I know any other swing I make with the same intent of making a weapon between point A and point B will need a bare minimum of .6 seconds for it to be useful.
So if I'm gonna make an upper cut, or an overhead swing, or a kick, I know the point from which I start to make the blade to the point of impact needs to be .6 seconds ergo, I master the timing and I can thus, apply it to other areas of my fighting style Whatever fighting style that might be.
And that's just one aspect, learning how to manipulate her center of gravity, how to drive a blow using her leg power and several other aspects are applicable almost universally to any fighting style or move.