World view used to be connected with the idea of a systematic philosophy. That idea was lost to the degree that people have world views that are immune to realty and employ self contradictory principles. A lot of work during the Middle Ages in philosophy was done to get to a systematic non self contradictory system. This still existed during the time of Hegel. But after that a world view could be just that --a world view unrelated to reality.

The good thing about Musar Ethics of the Middle Ages is that its structure depends on well worked out world views.

[I mean that Musar tends to depend on the books of Saadia Gaon and the Rambam in terms of world view]