Yep! This is the point. There are simply too many people in the danger zone of this volcano. It doesn't matter that its eruptions are more moderate than Pinatubo, Krakatau or Tambora for those who live on the slopes of Merapi. The "moderate" powers of nature are still dangerous enough to kill them all.
Kind of like falling into Kilauea ~ no matter how mid all it's other eruptions, that's gotta' hurt.