I get what this manga was going for but it does kind of come off as "You should hit women for equal rights" and I don't know how to feel about that.
Also
Certainly a lesson everyone could stand to learn at some point but it feels like society wants to hide people away from it. A failure that is glossed over and not properly address can't be fixed and over time will become a habit. Denying someone that learning moment because they are x or y or because it's only their xth time trying will only hold them back. Some will buckle under that failure and quit but that's their choice to make and not someone else's to hide them away from
this is great, fixing somebody else's mistakes without them knowing is disrespectful to them, since they wouldnt have the oppurtunity to learn and grow.