Thinking about it, Splash Mountain closing in Japan while possible seems unlikely for the time being:
- Song of the South, and by extension the Uncle Remus stories they are based off of, are public domain in Japan. Therefore, they don't have to pay the necessary licensing fees to keep the ride open.
- The issues regarding the source material are nearly nonexistent because of cultural differences.
- The entire Critter Country land is themed after the movie and a redo of the attraction would likely require years of work.
- Japan loves cute animal characters and Splash is full of them.