[barcode_feeder]

The usage of British English as an identifying factor seems ridiculous to me. Faking such a thing is extraordinarily low-hanging fruit even for a bumbler. Letting slip some regional red herring is quite literally the easiest misdirection I can think of)

[tobyp-]

He's also fairly inconsistent. He occasionally uses -ize endings, e.g. "realize". He also uses some language that is more prevalent in North American English, e.g. "sucks", "gotten", "chump change" and others.

Someone attempting to use British English to obscure their identity would know to use words like "maths" and "flat", as he did; not as many people however are aware that British English doesn't (typically) feature the word "gotten", which he used on multiple occasions. To me, this lends to the theory the BrE was a misdirection.

(As an aside, he's inconsistent in some other things, like "e-mail" versus "email", "TOR" versus "Tor", and "double click" versus "doubleclick".)