These mods are typically built on the engine of Just Dance 2020 (the last official Wii release).
Short verdict
The official support for the Wii ended with Just Dance 2020 . After that, Ubisoft moved exclusively to the Nintendo Switch, PS5, and Xbox Series X|S. So, why does the keyword "Just Dance 2023 Wii" exist? just dance 2023 wii wbfs exclusive