Oda not knowing when Wano will end pretty much debunks your argument.
Never said anything about act 4, but he could write exactly like that. But raid failling would be the fastest option to end the arc.
Never said anything about act 4, but he could write exactly like that. But raid failling would be the fastest option to end the arc.
The raid failing doesn't end the arc, the arc ends when Kaido is defeated and Wano is freed.