Kaido is like Napoleon theory
There are often historical references in One Piece, but they’ve been connecting things a lot more lately. Trafalgar’s name is based on the battles of Traflagar and Waterloo, Dressrosa is based on Spain, and Drake’s character design resembling that of a musketeer. These all play into people connecting the character Kaido to Napoleon. If that ends up being true, then there are plot points that may come up in future arcs. During the conflict with Kaido, there may be a decision by the Reverie to banish him since it seems he has a strong and possibly tyrannical connection to Wano country. Napoleon himself was exiled to Elba so this may be a sign that Kaido could be banished to Elbaf. It’s just another name and it may be a coincidence since Elbaf has been talked about since Little Garden.