Yeah, whether satoshi Nakamoto uses British or American English or other languages related to English, I don't think we have anything to worry about.
You see, Satoshi Nakamoto has done a brilliant job, though his identity is still unknown, but his work has given many of us great opportunity to be financially free. He may be a foreigner, just like the name sound, like a Japanese, but whether American or British, it is clear that he/she, or group person is yet to be known.
For me, I don't think that his identity is necessary even as Bitcoin has becomes so popular, it may be a distraction in my opinion