Now is probably a good time to point out that it's understandable when VFR Flight and Low Cloud or Fog come together a Spatial Disorentation event would be high on the list of usual suspects. It's not however a given in this specific event. A loss of power or engine power degrade in these conditions will still produce the same outcome. I note the wreckage suggests wings level and right way up at impact, coincidence, maybe, maybe not.