I’m trying to figure out how to contact DuckDuckGo, so they can redirect the !mcwiki command to the new site, but no luck so far.

What form is this?

DuckDuckGo has a page for adding or updating !bang commands (used to redirect searches to other sites). I requested they change which URL !mcwiki searches get directed to, using the minecraft.wiki search pattern instead of the gamepedia or fandom one. duckduckgo.com/newbang