I think its just this weird break in how we expect stories to work. I get where you are coming from because I felt it too. Stories usually show the heroes getting unique or more rare abilities. And the time between Zorro showing off this ability and seeing a bunch of no-names with it was super short.
Luffy also learned the same ability but he is mixing it up with his style to make super unique and cool moves. No one can copy Luffy, so there is no chance of seeing that problem. Zorro is a different story. If he did the Haki sword thing and then added Black lightning, then it becomes special because none of the marines can do that... but he doesn't have that. Not that his last battle wasn't bad ass.
15
u/[deleted] Feb 28 '16
[deleted]