Oda did this due to Zoro fanboys being extremely toxic and shitting onvtge all other fanbase and character's 24/7.
Oda was angry at the toxicity of Zoro fanboys so he did this to humble them.
Oda will continue to shit on them due this Mihawk business. I want them to gas Zoro up as Oda will shit on them two fold.
Lets be honest Oda does not give two turds about the opinion of Zoro tards. He was never gonna let Zoro beat the primary antagonist. Zoro's job is to beat the 2nd strongest guy which was King.
The only exception will be Mihawk since he isn't really a villain and is Zoro's personal goal.
Zoro didn't take much Ls in Wano only his fanboys with ridiculous expectations did.
He still tanked an attack from two yonkou, scarred Kaido and defeated King.