So you appeal to ignorance before projecting your own ignorance onto others? Hmm, rather humorous.
You were the own to originally bring up historical samurai to begin with in order to somehow reinforce whatever point you were supposedly making about fantasy shonen samurai in this thread and then doubled down on it by bringing up the Shinsengumi. I hardly see how this is supposedly my fault for going off topic.
Thus we circle right back to this post.
Considering how you are now going in circles and flip flopping between stating that historical samurai primary weapons are irrelevant to One Piece while also simultaneously still defending all of the dumb claims about historical samurai that are supposed to be irrelevant anyway (including truly egregious appeals to popular culture) then I am going to be calling quits on this convo. This shit is truly going nowhere.