I don't get it...The fella copying the scroll speaks English...What's to prevent him from translating correctly into English what he is reading and writing in Hebrew???
You obviously don't, and to tell the truth I don't get your question. Exactly what are you asking?
The person described by the article is a sofer, a Jewish Scribe. He is not translating at all. He is hand copying a Torah Scroll (in the original Hebrew text, all consonants and no vowels or punctuation) in accordance with the innumerable laws and regulations (handed down since the days of Moses) so that when he is finished he will have written a kosher Torah Scroll that is an exact replica of the one written by Moses and, before that, the First Great Torah Scroll written by G-d. It is only these kosher hand-written scrolls that are used for Torah readings in synagogue services.