We’ve had plenty of freestyle success and a lot of it has been guys right out of college. But the motivation doesn’t have to be wrestling related… it could be for education, culture, experience, money, etc. Plus, you have to consider that most wrestlers who change citizenship are doing it to go to an “inferior” country. The main motivation is to secure an Olympic spot… he’s a gold medal contender for sure, but it’s far from a guarantee he could make Japans team.
To be clear, I have no idea if this is his plan… it was pure speculation. But I don’t think you can say there would be no reason for it all.