Flight vis, locale, and experience
We are again discussing an accident, in which reduced visibility would seem to be a factor. Experience and local knowledge can be factors in dealing with low flight visibility (or deciding to avoid).
With low experience, a wise pilot would raise their personal limits for visibility, and different locale should cause them to further consider the factors. If you're well experienced, and in very familiar locale, you might accept lower visibility for a short local flight. If vis is great, you might venture into "new" terrain.
This theme follows the "Swiss cheese" model of accident risk. As different factors (the pieces of cheese) change relative to each other, the holes could align, and you drop into an accident.
What are pilots doing, and being trained to do, to recognize the increasing risk, when factors combine?