Oda himself said - This is a story of how once mighty samurai returned their glory.
The same guy who didnt show samurai return their former glory said that they did.
The same guy who drew Zoro say - I am here to cut Kaido into pieces.
The same guy who didnt show samurai return their former glory said that they did.
The same guy who drew Zoro say - I am here to cut Kaido into pieces.
Now if you think he alone should have returned the glory is another discussion.
If you have trouble remembering samurai former glory - nobody dared enter Wano due to Ryuma.
Is the former glory returned by sacking all the plotlines in Wano, including the center figure - Zoro?
Is the former glory returned by sacking all the plotlines in Wano, including the center figure - Zoro?
There was no narrative requirement for Luffy's presence in Wano whatsoever.
his presence in wano and defeating kaido was sealed since then.
Regarding big mom, no the straw hat pirates were not capable of defeating both the yonkos and their crews in a parrallel arc.