What are they going to do? Ban them?

Honestly if I was migrating away from Fandom I’d do everything I can to burn every bridge. Go through and edit every page to have every link redirect to the better wiki. Ignore their 2-week period, and don’t inform the Fandom overlords that the wiki is being shut down (it’s not like they’re going to check without being prompted).

I’d make them ban me, and then good luck finding an admin.