User blog comment:MisterWoodhouse/The first migrations to the Unified Community Platform/@comment-31790818-20200624234637/@comment-1038387-20200626080007

The underlying software is different, so a toggle is impossible. And the entire purpose of unifying the community platforms is to cut down on maintenance... so maintaining an additional code base for the people who don't want to switch defeats the purpose.

The steam engine wasn't broken. It was just grossly inefficient. Fandom may not have been "broken" in your view, but that was because it was held together with duct tape, bubble gum and pure black magic.