We were promised a "Huge incident". Manga is getting closer to ending. If they don't do shit now, there won't be any time for them to do any shit later.
If they read the papers "Starwhat goofy under siege in egghead" and don't come, might as well disband the fleet cause what's the fucking point?
vivre card burning up in wano is one thing. But them seeing the egghead siege news a whole day ago and not doing shit completely erases any purpose they had or will have.