Auto-translated
Dear Dmitry, we are getting into sophistry, because your post already contains the assumption "He would have noticed the antimagic," which I didn't take into account at all...
Nevertheless, the facts mentioned by the author were enough for me to make, if not a strictly syllogistic, but still a conclusion that Armageddon was not cast by him.
Although, I agree, sometimes it's better to ask too many questions than too few. :)