I couldn't make myself read the whole thing, but I think it's far from accurate. For instance, he seems to be able to communicate in Japanese but he still does

I couldn't make myself read the whole thing, but I think it's far from accurate. For instance, he seems to be able to communicate in Japanese but he still doesn't grasp that "otsukaresama" and "irasshaimase" are really only greetings. I wonder what would be his reaction if he heard that in some places it's usual to say "ohayou gozaimasu" (usually meaning "good morning") when you get to the office in the evening. Mandatory parties aren't really mandatory, you see. Many Japanese do "escape" the parties. You just have to do it tactfully. And so on. That said, I agree with you about avoiding working in a Japanese office. The usual English teaching path seems to work for a lot of people, though.