Someone who has read his material would be likely to repeat the same analogies and trivia.
As for the hyphen errors, they are common for people for whom English is their second language. I commit hyphen errors similar to what is described all the time because English hyphenation makes absolutely no sense. In fact, reading the list of examples, the mistakes listed makes more sense to me than the correct way of writing those.
I also switch back and forth on a lot of the phrases the article mentions.
I also switch back and forth between US and UK spelling, because I learned UK spelling at school, but was far more exposed to US spelling in practice.
This seems to me to be exceedingly weak.
At some point "Satoshi was a devoted reader of obscure 1997 Adam Back mailing list posts who shares his hyphenation errors, his Napster vs Gnutella analogy, his celebrity email filtering idea, his FDR gold ban interest, his 'burning the money' metaphor, his 'Achilles heel' description of DigiCash, his 'better with code than words' self-assessment, his energy-vs-banking defense, his British spellings mixed with American ones, his double-spacing habit, his it's/its confusion, his sentence-final 'also' tic, his 'proof-of-work' hyphenation, his WebMoney references, and who went active the exact week Back went silent" is just a longer way of saying it's Adam Back.
I'm not sure I agree with that, but it's what I came up with after challenging myself to read the article in toto again and note 1 by 1.
It's clear it's beyond a couple tics everyone has, and when you combine that with the starting set being ~500 instead of "all 8 billion people on earth", well, it's worth mentioning.
As a Swede I also do all of these things. And it doesn't feel like anything special, I imagine hundreds of thousands of people do the same.