They'll pay out people from the US first for sure, but that's just how the bankruptcy process works and there likely won't be anything left by the time the queue moved down to foreign holders. But the reason you've provided is just plain fake news
Apparently there was special rules for Japan. The regulations were a result of Mt Gox failing. Basically you cant comingle funds and the accounts need to be linked to a trusted third party.
https://www.coindesk.com/consensus-magazine/2022/12/13/japan...
Even what? Really?
My impression from Ray's congressional testimony was "FTX.us might be solvent, but we don't know yet because the forensic accountants are still chipping away". But I was only half focused and am not confident I remember correctly.
The gist of what was said, is that a lawmaker cited something about FTX.US being "98% solvent" and asked John for confirmation of this. John stated that he couldn't give any figures at the moment, but there was generally truth to the statement that U.S. customers would be hurt less than others.
Here's an article that touches on it.
https://www.bloomberg.com/news/articles/2022-12-13/ftx-s-us-...