Literally argument he makes can just be addressed post defeat:
- Yamato's mother/Oni stuff: her possible flashback
- Wano's possible secret to One Piece: Post defeat
- Wano's name as the country of Gold: Post defeat
- Man sitting with crocus: post defeat
- Rocks content: doesn't even have to happen this arc
- Toki's relevance as a time traveler, does not have to be relevant this arc. Her past 800 years ago was never meant to be explored here.
- Zoro's lineage: Ryuma's grave post defeat. He can speak with Onimaru
- Nidai: Tengu can give it to zoro as a trade for Sandai.
- Onigashima's original name, post defeat.....
- Dawn, Opening Borders, Zunisha's role, Momo's adult form
Etc etc etc
Like he takes things in the context that Kaido can't be down to explain these things. Is it weird that some haven't? Maybe, but it's all possible it's tied to some mystery about Wano that is about to be shown. Who knows.
Edit: And the ticking time bomb literally was the bombs on Onigashima. Oda has made it a point to not expose the capital to the danger of Wano right now.