@nobaka
And guess what, spears and polearms WERE the kings of the battlefield exactly for that reason, because reach is indeed the most important. And I don't take that from manga, but from history, I don't know where you even got that from. Swords were in the vast majority of cases merely sidearms, meant for personal protection when shit hit the fan. Basically your pistol compared to your rifle. Even katanas were just a backup weapon in most cases. (There are, obviously, exceptions to this, as always, but the predominant rule is that ranged weapons and polearms are the main weapon in the vast majority of cases)
And I'm not talking about the difference between slashing and stabbing, that much is obvious. Puncture wounds are obviously more lethal. I'm talking about slashing from the two kinds of grips, because the character is not stabbing, he's slashing with his weapon. And the ice pick grip absolutely sucks for slashing, which is why I pointed out that he's using "the wrong grip", because of the way he's using the weapon.
And as a side note, the folding technique didn't create a superior slashing weapon, it just created a weapon that wasn't garbage. The folding was to spread out the impurities in the material(because Japan didn't have access to high quality iron ore for a very long time) more evenly so that the blade doesn't break under stress. It had absolutely nothing to do with sharpness or actual effectiveness of the weapon.
Pugilistic weapons are only used in personal protection, civilian setting. Basically, so that you can hide it. They're not weapons of preference in any way, they're weapons of convenience. If you can't have something bigger and more conspicuous, then you pick that because it's better than nothing. There's also the fact that context of their use is very important. If you fight in a crowded space, like a narrow street, on in an ambush/mugging then a long weapon is not something desirable.