Semi agree. Pitch dark. Ice jammed instruments. Conflicting data from those that worked (perhaps partially, instruments get crazy if sensor ports blocked with ice then starts to melt away).
I guess by the time they figured it out it was all too late. Outside sensors should have heat. In some planes it comes on automatically when the temperature drops a certain degree or water plus temp. drop is sensed. With that all-electronic Airbus you would think they’d design that in. Or - better yet - over rides - which apparently they didn’t have or use.