There's already far more text written by him (as well as code), and there have been run comparisons of it against all the seriously proposed candidates.
A good writer can probably change his/her demeanor and style in writing when changing personas. I'm sure it's hard work, but I'm also sure that practice makes it possible -- at least for some gifted people. It's also possible that Satoshi isn't a single human being, but an organization that can dedicate a lot of effort to this sort of thing.
Anything is possible, but not everything is equally possible. I consider it most likely that bitcoin was developed by the 3-4 people who still worked on digital cash schemes after Chaum's scheme failed in 1998. Of those, Nick Szabo (with British spellcheck) is the strongest candidate for being the one who held the Satoshi keys.
As a Canadian who was raised on British English, I seamlessly switch between British and American English when interacting with clients from the US, England, and Canada. This flexibility in language is quite natural to me. Furthermore, for someone who meticulously conceals their identity, adapting in such a manner would likely be effortless and unremarkable.
"gotten" would be less unusual for a Scottish person, although it is usually used in the context of "ill-gotten [gains]" it does crop up now and again outwith that.
The article in the comment you responded to contains the following information:
"Since COSIC was based in Leuven, Len was living in Belgium during Bitcoin’s development. This is salient given that a number of facts suggest that Satoshi was based in Europe...
Satoshi’s writing exhibits spelling and word choices idiosyncratic of British English such as “bloody difficult”, “flat”, “maths”, grey”, as well as the dd/mm/yyyy date format. However, Satoshi also refers to Euros rather than pounds.
These clues leave us with a paradox: they suggest Satoshi was European, yet someone with the requisite skillset and exposure to Bitcoin’s primary influences would likely have been American. Much of the Cypherpunk community coalesced conferences and meetups, part of why a disproportionate number hailed from America and especially SF. The jobs where one could have gained cutting-edge professional infosec and crypto experience were similarly concentrated in the US.
Strangely enough, Len used the very same British English as Satoshi even though he was American."
yes, the article referenced above referenced several tweet's from Len using Britishisms like "bloody". He was an American, living in Europe. Satoshi also referenced Euros (rather than pounds).
I'm British and I use the word. "They've gotten good". Coders in particular have to learn American and a lot of us just use American on the internet unless we're talking in an English (or UK - English, Welsh, Scottish, North Irish) corner of the interwebs.
Or even Cornish! I was pleasantly surprised to find Cornish written across the side of the buses whilst visiting Plymouth. It's not much more than a linguistic and cultural curiosity, unfortunately, with even the excitement of the Cornish Revival being wholly insufficient to reach a critical mass of contemporary speakers. However, if there's just a faint possibility we'll be able to preserve the tradition I'm all for it.
It does exist (in that British people are aware of the US usage and "ill gotten gains") but sounds like a clueless person talking, or a child, so unless deeply exposes to American English nobody would use it themselves. I'm beginning to, but only after 30 years in the colonies.
Hm. Listen some more! We use it in the US Midwest routinely. Had gotten dehydrated. Have gotten bit by that issue. We've gotten the flu around here pretty frequently this winter.
