Granted there was a shakedown period- the truly apocalyptic part was relatively short lived (mainly whilst Luther was in hiding), but after that things settled down, much as they had after the Catholic/Orthodox split.
In spite of some claiming the other side represented the Anti-Christ, it was not truly apocalyptic mentality because it was not looked at as a doomsday scenario- which is what the thrust of the article was about.
The real impact of the reformation can be measured in the explosion of art and science and freedom of thought and religion that it spawned.